404243434 has 24 divisors (see below), whose sum is σ = 710535780. Its totient is φ = 171976896.

The previous prime is 404243431. The next prime is 404243461. The reversal of 404243434 is 434342404.

It can be written as a sum of positive squares in 2 ways, for example, as 403889409 + 354025 = 20097^2 + 595^2 .

It is a super-2 number, since 2×404243434² = 326825507864224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404243431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1629 + ... + 28480.

Almost surely, 2^404243434 is an apocalyptic number.

404243434 is a deficient number, since it is larger than the sum of its proper divisors (306292346).

404243434 is a wasteful number, since it uses less digits than its factorization.

404243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30262 (or 30255 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 404243434 is about 20105.8059773788. The cubic root of 404243434 is about 739.4026308781.

Adding to 404243434 its reverse (434342404), we get a palindrome (838585838).

The spelling of 404243434 in words is "four hundred four million, two hundred forty-three thousand, four hundred thirty-four".