409368431 has 2 divisors, whose sum is σ = 409368432. Its totient is φ = 409368430.

The previous prime is 409368419. The next prime is 409368457. The reversal of 409368431 is 134863904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 409368431 - 2²² = 405174127 is a prime.

It is a super-2 number, since 2×409368431² = 335165024598803522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409361431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204684215 + 204684216.

It is an arithmetic number, because the mean of its divisors is an integer number (204684216).

Almost surely, 2^409368431 is an apocalyptic number.

409368431 is a deficient number, since it is larger than the sum of its proper divisors (1).

409368431 is an equidigital number, since it uses as much as digits as its factorization.

409368431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 409368431 is about 20232.8552359770. The cubic root of 409368431 is about 742.5142328175.

The spelling of 409368431 in words is "four hundred nine million, three hundred sixty-eight thousand, four hundred thirty-one".