406392885 has 24 divisors (see below), whose sum is σ = 716358240. Its totient is φ = 213067872.

The previous prime is 406392859. The next prime is 406392893. The reversal of 406392885 is 588293604.

406392885 is a `hidden beast` number, since 4 + 0 + 639 + 2 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 406392885 - 2⁶ = 406392821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 406392885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73879 + ... + 79188.

It is an arithmetic number, because the mean of its divisors is an integer number (29848260).

Almost surely, 2^406392885 is an apocalyptic number.

406392885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

406392885 is a deficient number, since it is larger than the sum of its proper divisors (309965355).

406392885 is a wasteful number, since it uses less digits than its factorization.

406392885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153137 (or 153134 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 406392885 is about 20159.1885997428. The cubic root of 406392885 is about 740.7108369241.

The spelling of 406392885 in words is "four hundred six million, three hundred ninety-two thousand, eight hundred eighty-five".