409320831 has 16 divisors (see below), whose sum is σ = 549918720. Its totient is φ = 270809280.

The previous prime is 409320829. The next prime is 409320851. The reversal of 409320831 is 138023904.

It is not a de Polignac number, because 409320831 - 2¹ = 409320829 is a prime.

It is a super-2 number, since 2×409320831² = 335087085381061122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409320851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463116 + ... + 463998.

It is an arithmetic number, because the mean of its divisors is an integer number (34369920).

Almost surely, 2^409320831 is an apocalyptic number.

409320831 is a deficient number, since it is larger than the sum of its proper divisors (140597889).

409320831 is a wasteful number, since it uses less digits than its factorization.

409320831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 409320831 is about 20231.6788972146. The cubic root of 409320831 is about 742.4854526733.

The spelling of 409320831 in words is "four hundred nine million, three hundred twenty thousand, eight hundred thirty-one".