405164475 has 18 divisors (see below), whose sum is σ = 725694996. Its totient is φ = 216087600.

The previous prime is 405164453. The next prime is 405164491. The reversal of 405164475 is 574461504.

405164475 is a `hidden beast` number, since 4 + 0 + 5 + 1 + 644 + 7 + 5 = 666.

It is not a de Polignac number, because 405164475 - 2¹⁴ = 405148091 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 900141 + ... + 900590.

Almost surely, 2^405164475 is an apocalyptic number.

405164475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405164475 is a deficient number, since it is larger than the sum of its proper divisors (320530521).

405164475 is a wasteful number, since it uses less digits than its factorization.

405164475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800747 (or 1800739 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 405164475 is about 20128.6977969267. The cubic root of 405164475 is about 739.9637643567.

The spelling of 405164475 in words is "four hundred five million, one hundred sixty-four thousand, four hundred seventy-five".