405664104 has 16 divisors (see below), whose sum is σ = 1014160320. Its totient is φ = 135221360.

The previous prime is 405664099. The next prime is 405664121. The reversal of 405664104 is 401466504.

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, 8451312 + ... + 8451359.

It is an arithmetic number, because the mean of its divisors is an integer number (63385020).

Almost surely, 2^405664104 is an apocalyptic number.

It is an amenable number.

405664104 is an abundant number, since it is smaller than the sum of its proper divisors (608496216).

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

405664104 is a wasteful number, since it uses less digits than its factorization.

405664104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16902680 (or 16902676 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 405664104 is about 20141.1048356340. The cubic root of 405664104 is about 740.2678017819.

The spelling of 405664104 in words is "four hundred five million, six hundred sixty-four thousand, one hundred four".