408115616 has 12 divisors (see below), whose sum is σ = 803477682. Its totient is φ = 204057792.

The previous prime is 408115613. The next prime is 408115639. The reversal of 408115616 is 616511804.

It can be written as a sum of positive squares in only one way, i.e., 239011600 + 169104016 = 15460^2 + 13004^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 12753613 = 408115616 / (4 + 0 + 8 + 1 + 1 + 5 + 6 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (408115613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376775 + ... + 6376838.

Almost surely, 2^408115616 is an apocalyptic number.

It is an amenable number.

408115616 is a deficient number, since it is larger than the sum of its proper divisors (395362066).

408115616 is a wasteful number, since it uses less digits than its factorization.

408115616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753623 (or 12753615 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 408115616 is about 20201.8715964635. The cubic root of 408115616 is about 741.7560050499.

The spelling of 408115616 in words is "four hundred eight million, one hundred fifteen thousand, six hundred sixteen".