408745988 has 12 divisors (see below), whose sum is σ = 817492032. Its totient is φ = 175176840.

The previous prime is 408745969. The next prime is 408745999. The reversal of 408745988 is 889547804.

It is a happy number.

408745988 is an admirable number.

It is a super-2 number, since 2×408745988² = 334146565412192288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7299008 + ... + 7299063.

It is an arithmetic number, because the mean of its divisors is an integer number (68124336).

Almost surely, 2^408745988 is an apocalyptic number.

It is an amenable number.

408745988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408745988 is a wasteful number, since it uses less digits than its factorization.

408745988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14598082 (or 14598080 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 53.

The square root of 408745988 is about 20217.4673982673. The cubic root of 408745988 is about 742.1377119840.

The spelling of 408745988 in words is "four hundred eight million, seven hundred forty-five thousand, nine hundred eighty-eight".