404053239 has 4 divisors (see below), whose sum is σ = 538737656. Its totient is φ = 269368824.

The previous prime is 404053207. The next prime is 404053249. The reversal of 404053239 is 932350404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 404053239 - 2⁵ = 404053207 is a prime.

It is a super-2 number, since 2×404053239² = 326518039892782242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404053249) 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, 67342204 + ... + 67342209.

It is an arithmetic number, because the mean of its divisors is an integer number (134684414).

Almost surely, 2^404053239 is an apocalyptic number.

404053239 is a deficient number, since it is larger than the sum of its proper divisors (134684417).

404053239 is a wasteful number, since it uses less digits than its factorization.

404053239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134684416.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 404053239 is about 20101.0755682376. The cubic root of 404053239 is about 739.2866506438.

The spelling of 404053239 in words is "four hundred four million, fifty-three thousand, two hundred thirty-nine".