406239057 has 60 divisors (see below), whose sum is σ = 743220720. Its totient is φ = 219878064.

The previous prime is 406239049. The next prime is 406239073. The reversal of 406239057 is 750932604.

It is not a de Polignac number, because 406239057 - 2³ = 406239049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406235057) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 72718 + ... + 78104.

It is an arithmetic number, because the mean of its divisors is an integer number (12387012).

Almost surely, 2^406239057 is an apocalyptic number.

It is an amenable number.

406239057 is a deficient number, since it is larger than the sum of its proper divisors (336981663).

406239057 is a wasteful number, since it uses less digits than its factorization.

406239057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432 (or 5416 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 406239057 is about 20155.3729064982. The cubic root of 406239057 is about 740.6173670740.

The spelling of 406239057 in words is "four hundred six million, two hundred thirty-nine thousand, fifty-seven".