Search a number
-
+
13902469 = 71986067
BaseRepresentation
bin110101000010…
…001010000101
3222011022121021
4311002022011
512024334334
61213551141
7226111660
oct65021205
928138537
1013902469
117936149
1247a54b1
132b59c19
141bbc6d7
1513493b4
hexd42285

13902469 has 4 divisors (see below), whose sum is σ = 15888544. Its totient is φ = 11916396.

The previous prime is 13902463. The next prime is 13902479. The reversal of 13902469 is 96420931.

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: 96420931 = 611580671.

It is a cyclic number.

It is not a de Polignac number, because 13902469 - 23 = 13902461 is a prime.

It is a super-2 number, since 2×139024692 = 386557288591922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993027 + ... + 993040.

It is an arithmetic number, because the mean of its divisors is an integer number (3972136).

Almost surely, 213902469 is an apocalyptic number.

It is an amenable number.

13902469 is a deficient number, since it is larger than the sum of its proper divisors (1986075).

13902469 is an equidigital number, since it uses as much as digits as its factorization.

13902469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986074.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13902469 is about 3728.6014804481. The cubic root of 13902469 is about 240.4532465021.

The spelling of 13902469 in words is "thirteen million, nine hundred two thousand, four hundred sixty-nine".

Divisors: 1 7 1986067 13902469