405539896 has 16 divisors (see below), whose sum is σ = 805116240. Its totient is φ = 190842240.

The previous prime is 405539873. The next prime is 405539903. The reversal of 405539896 is 698935504.

It is a congruent number.

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, 1490820 + ... + 1491091.

It is an arithmetic number, because the mean of its divisors is an integer number (50319765).

Almost surely, 2^405539896 is an apocalyptic number.

It is an amenable number.

405539896 is a deficient number, since it is larger than the sum of its proper divisors (399576344).

405539896 is a wasteful number, since it uses less digits than its factorization.

405539896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981934 (or 2981930 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 405539896 is about 20138.0211540260. The cubic root of 405539896 is about 740.1922412643.

The spelling of 405539896 in words is "four hundred five million, five hundred thirty-nine thousand, eight hundred ninety-six".