408479745 has 32 divisors (see below), whose sum is σ = 671939712. Its totient is φ = 211807232.

The previous prime is 408479737. The next prime is 408479759. The reversal of 408479745 is 547974804.

408479745 = 1845² + 1846² + ... + 1957².

It is a cyclic number.

It is not a de Polignac number, because 408479745 - 2³ = 408479737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 408479694 and 408479703.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87562 + ... + 92108.

It is an arithmetic number, because the mean of its divisors is an integer number (20998116).

Almost surely, 2^408479745 is an apocalyptic number.

It is an amenable number.

408479745 is a deficient number, since it is larger than the sum of its proper divisors (263459967).

408479745 is a wasteful number, since it uses less digits than its factorization.

408479745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 408479745 is about 20210.8818461739. The cubic root of 408479745 is about 741.9765427060.

The spelling of 408479745 in words is "four hundred eight million, four hundred seventy-nine thousand, seven hundred forty-five".