408145884 has 24 divisors (see below), whose sum is σ = 985180560. Its totient is φ = 131357184.

The previous prime is 408145883. The next prime is 408145921. The reversal of 408145884 is 488541804.

It is a super-2 number, since 2×408145884² = 333166125252282912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408145883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586069 + ... + 586764.

It is an arithmetic number, because the mean of its divisors is an integer number (41049190).

Almost surely, 2^408145884 is an apocalyptic number.

It is an amenable number.

408145884 is an abundant number, since it is smaller than the sum of its proper divisors (577034676).

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

408145884 is a wasteful number, since it uses less digits than its factorization.

408145884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172869 (or 1172867 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 42.

The square root of 408145884 is about 20202.6207210847. The cubic root of 408145884 is about 741.7743421051.

The spelling of 408145884 in words is "four hundred eight million, one hundred forty-five thousand, eight hundred eighty-four".