1369869 has 4 divisors (see below), whose sum is σ = 1826496. Its totient is φ = 913244.

The previous prime is 1369861. The next prime is 1369871. The reversal of 1369869 is 9689631.

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.

It is a cyclic number.

It is not a de Polignac number, because 1369869 - 2³ = 1369861 is a prime.

It is a super-2 number, since 2×1369869² = 3753082154322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1369869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369861) 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, 228309 + ... + 228314.

It is an arithmetic number, because the mean of its divisors is an integer number (456624).

2^1369869 is an apocalyptic number.

It is an amenable number.

1369869 is a deficient number, since it is larger than the sum of its proper divisors (456627).

1369869 is an equidigital number, since it uses as much as digits as its factorization.

1369869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456626.

The product of its digits is 69984, while the sum is 42.

The square root of 1369869 is about 1170.4140293076. The cubic root of 1369869 is about 111.0605140370.

The spelling of 1369869 in words is "one million, three hundred sixty-nine thousand, eight hundred sixty-nine".