404030990 has 16 divisors (see below), whose sum is σ = 793370160. Its totient is φ = 146920320.

The previous prime is 404030917. The next prime is 404031011. The reversal of 404030990 is 99030404.

It is a happy number.

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, 1836395 + ... + 1836614.

It is an arithmetic number, because the mean of its divisors is an integer number (49585635).

Almost surely, 2^404030990 is an apocalyptic number.

404030990 is a deficient number, since it is larger than the sum of its proper divisors (389339170).

404030990 is a wasteful number, since it uses less digits than its factorization.

404030990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673027.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 404030990 is about 20100.5221325218. The cubic root of 404030990 is about 739.2730809051.

The spelling of 404030990 in words is "four hundred four million, thirty thousand, nine hundred ninety".