408195656 has 16 divisors (see below), whose sum is σ = 834945840. Its totient is φ = 185543440.

The previous prime is 408195637. The next prime is 408195659. The reversal of 408195656 is 656591804.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (408195659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2319206 + ... + 2319381.

It is an arithmetic number, because the mean of its divisors is an integer number (52184115).

Almost surely, 2^408195656 is an apocalyptic number.

It is an amenable number.

408195656 is an abundant number, since it is smaller than the sum of its proper divisors (426750184).

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

408195656 is a wasteful number, since it uses less digits than its factorization.

408195656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638604 (or 4638600 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 408195656 is about 20203.8525039162. The cubic root of 408195656 is about 741.8044931641.

The spelling of 408195656 in words is "four hundred eight million, one hundred ninety-five thousand, six hundred fifty-six".