408664445 has 64 divisors (see below), whose sum is σ = 642193920. Its totient is φ = 242860032.

The previous prime is 408664429. The next prime is 408664453. The reversal of 408664445 is 544466804.

It is a cyclic number.

It is not a de Polignac number, because 408664445 - 2⁴ = 408664429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 417797 + ... + 418773.

It is an arithmetic number, because the mean of its divisors is an integer number (10034280).

Almost surely, 2^408664445 is an apocalyptic number.

It is an amenable number.

408664445 is a deficient number, since it is larger than the sum of its proper divisors (233529475).

408664445 is a wasteful number, since it uses less digits than its factorization.

408664445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062.

The product of its (nonzero) digits is 368640, while the sum is 41.

The square root of 408664445 is about 20215.4506504307. The cubic root of 408664445 is about 742.0883576483.

The spelling of 408664445 in words is "four hundred eight million, six hundred sixty-four thousand, four hundred forty-five".