408423928 has 32 divisors (see below), whose sum is σ = 837164160. Its totient is φ = 185258080.

The previous prime is 408423913. The next prime is 408423931. The reversal of 408423928 is 829324804.

It is a super-4 number, since 4×408423928⁴ (a number of 36 digits) contains 4444 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39651 + ... + 48877.

It is an arithmetic number, because the mean of its divisors is an integer number (26161380).

Almost surely, 2^408423928 is an apocalyptic number.

It is an amenable number.

408423928 is an abundant number, since it is smaller than the sum of its proper divisors (428740232).

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

408423928 is a wasteful number, since it uses less digits than its factorization.

408423928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747 (or 9743 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 408423928 is about 20209.5009339667. The cubic root of 408423928 is about 741.9427451989.

The spelling of 408423928 in words is "four hundred eight million, four hundred twenty-three thousand, nine hundred twenty-eight".