409828831 has 2 divisors, whose sum is σ = 409828832. Its totient is φ = 409828830.

The previous prime is 409828813. The next prime is 409828919. The reversal of 409828831 is 138828904.

Together with previous prime (409828813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409828831 - 2⁷ = 409828703 is a prime.

It is a super-2 number, since 2×409828831² = 335919341437653122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409828801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204914415 + 204914416.

It is an arithmetic number, because the mean of its divisors is an integer number (204914416).

Almost surely, 2^409828831 is an apocalyptic number.

409828831 is a deficient number, since it is larger than the sum of its proper divisors (1).

409828831 is an equidigital number, since it uses as much as digits as its factorization.

409828831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 409828831 is about 20244.2295728931. The cubic root of 409828831 is about 742.7924870344.

The spelling of 409828831 in words is "four hundred nine million, eight hundred twenty-eight thousand, eight hundred thirty-one".