404360431 has 4 divisors (see below), whose sum is σ = 404567352. Its totient is φ = 404153512.

The previous prime is 404360417. The next prime is 404360449. The reversal of 404360431 is 134063404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 404360431 - 2⁷ = 404360303 is a prime.

It is a super-2 number, since 2×404360431² = 327014716317011522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404360396 and 404360405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404360471) 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, 100501 + ... + 104446.

It is an arithmetic number, because the mean of its divisors is an integer number (101141838).

Almost surely, 2^404360431 is an apocalyptic number.

404360431 is a deficient number, since it is larger than the sum of its proper divisors (206921).

404360431 is a wasteful number, since it uses less digits than its factorization.

404360431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206920.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 404360431 is about 20108.7152995909. The cubic root of 404360431 is about 739.4739571614.

The spelling of 404360431 in words is "four hundred four million, three hundred sixty thousand, four hundred thirty-one".