16404269 has 24 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 12921216.

The previous prime is 16404253. The next prime is 16404281. The reversal of 16404269 is 96240461.

It is a happy number.

It is not a de Polignac number, because 16404269 - 2⁴ = 16404253 is a prime.

It is a super-2 number, since 2×16404269² = 538200082848722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38942 + ... + 39360.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^16404269 is an apocalyptic number.

It is an amenable number.

16404269 is a deficient number, since it is larger than the sum of its proper divisors (4279891).

16404269 is a wasteful number, since it uses less digits than its factorization.

16404269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 16404269 is about 4050.2183891736. The cubic root of 16404269 is about 254.0888615860.

The spelling of 16404269 in words is "sixteen million, four hundred four thousand, two hundred sixty-nine".