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1361469 = 3453823
BaseRepresentation
bin101001100011000111101
32120011120210
411030120331
5322031334
645103033
714400204
oct5143075
92504523
101361469
1184a98a
12557a79
13388905
1427623b
151bd5e9
hex14c63d

1361469 has 4 divisors (see below), whose sum is σ = 1815296. Its totient is φ = 907644.

The previous prime is 1361453. The next prime is 1361471. The reversal of 1361469 is 9641631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9641631 = 33213877.

It is not a de Polignac number, because 1361469 - 24 = 1361453 is a prime.

It is a super-2 number, since 2×13614692 = 3707195675922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226909 + ... + 226914.

It is an arithmetic number, because the mean of its divisors is an integer number (453824).

21361469 is an apocalyptic number.

It is an amenable number.

1361469 is a deficient number, since it is larger than the sum of its proper divisors (453827).

1361469 is an equidigital number, since it uses as much as digits as its factorization.

1361469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453826.

The product of its digits is 3888, while the sum is 30.

The square root of 1361469 is about 1166.8200375379. The cubic root of 1361469 is about 110.8330417515.

It can be divided in two parts, 1361 and 469, that added together give a triangular number (1830 = T60).

The spelling of 1361469 in words is "one million, three hundred sixty-one thousand, four hundred sixty-nine".

Divisors: 1 3 453823 1361469