404296990 has 16 divisors (see below), whose sum is σ = 759375648. Its totient is φ = 154687456.

The previous prime is 404296903. The next prime is 404297027. The reversal of 404296990 is 99692404.

It is a super-2 number, since 2×404296990² = 326912112246120200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 878677 + ... + 879136.

It is an arithmetic number, because the mean of its divisors is an integer number (47460978).

Almost surely, 2^404296990 is an apocalyptic number.

404296990 is a deficient number, since it is larger than the sum of its proper divisors (355078658).

404296990 is a wasteful number, since it uses less digits than its factorization.

404296990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757843.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 404296990 is about 20107.1377873630. The cubic root of 404296990 is about 739.4352825720.

The spelling of 404296990 in words is "four hundred four million, two hundred ninety-six thousand, nine hundred ninety".