403312990 has 16 divisors (see below), whose sum is σ = 726803280. Its totient is φ = 161138560.

The previous prime is 403312979. The next prime is 403313017. The reversal of 403312990 is 99213304.

It is a super-2 number, since 2×403312990² = 325322735805480200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14080 + ... + 31699.

It is an arithmetic number, because the mean of its divisors is an integer number (45425205).

Almost surely, 2^403312990 is an apocalyptic number.

403312990 is a deficient number, since it is larger than the sum of its proper divisors (323490290).

403312990 is a wasteful number, since it uses less digits than its factorization.

403312990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46667.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 403312990 is about 20082.6539580803. The cubic root of 403312990 is about 738.8349026287.

The spelling of 403312990 in words is "four hundred three million, three hundred twelve thousand, nine hundred ninety".