405491088 has 20 divisors (see below), whose sum is σ = 1047518768. Its totient is φ = 135163680.

The previous prime is 405491071. The next prime is 405491101. The reversal of 405491088 is 880194504.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 4223818 + ... + 4223913.

Almost surely, 2^405491088 is an apocalyptic number.

405491088 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

405491088 is an abundant number, since it is smaller than the sum of its proper divisors (642027680).

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

405491088 is a wasteful number, since it uses less digits than its factorization.

405491088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8447742 (or 8447736 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 405491088 is about 20136.8092805191. The cubic root of 405491088 is about 740.1625452527.

The spelling of 405491088 in words is "four hundred five million, four hundred ninety-one thousand, eighty-eight".