408990128 has 10 divisors (see below), whose sum is σ = 792418404. Its totient is φ = 204495056.

The previous prime is 408990089. The next prime is 408990137. The reversal of 408990128 is 821099804.

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 as a sum of consecutive naturals, namely, 12780926 + ... + 12780957.

Almost surely, 2^408990128 is an apocalyptic number.

It is an amenable number.

408990128 is a deficient number, since it is larger than the sum of its proper divisors (383428276).

408990128 is a wasteful number, since it uses less digits than its factorization.

408990128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25561891 (or 25561885 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 408990128 is about 20223.5043451920. The cubic root of 408990128 is about 742.2854397863.

The spelling of 408990128 in words is "four hundred eight million, nine hundred ninety thousand, one hundred twenty-eight".