405795816 has 48 divisors (see below), whose sum is σ = 1124597760. Its totient is φ = 132118560.

The previous prime is 405795809. The next prime is 405795823. The reversal of 405795816 is 618597504.

It is an interprime number because it is at equal distance from previous prime (405795809) and next prime (405795823).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62440 + ... + 68631.

It is an arithmetic number, because the mean of its divisors is an integer number (23429120).

Almost surely, 2^405795816 is an apocalyptic number.

It is an amenable number.

405795816 is an abundant number, since it is smaller than the sum of its proper divisors (718801944).

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

405795816 is a wasteful number, since it uses less digits than its factorization.

405795816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131126 (or 131119 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 405795816 is about 20144.3743015265. The cubic root of 405795816 is about 740.3479104245.

The spelling of 405795816 in words is "four hundred five million, seven hundred ninety-five thousand, eight hundred sixteen".