408315641 has 2 divisors, whose sum is σ = 408315642. Its totient is φ = 408315640.

The previous prime is 408315631. The next prime is 408315667. The reversal of 408315641 is 146513804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407192041 + 1123600 = 20179^2 + 1060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408315641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 408315598 and 408315607.

It is not a weakly prime, because it can be changed into another prime (408315631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204157820 + 204157821.

It is an arithmetic number, because the mean of its divisors is an integer number (204157821).

Almost surely, 2^408315641 is an apocalyptic number.

It is an amenable number.

408315641 is a deficient number, since it is larger than the sum of its proper divisors (1).

408315641 is an equidigital number, since it uses as much as digits as its factorization.

408315641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 408315641 is about 20206.8216451772. The cubic root of 408315641 is about 741.8771680293.

The spelling of 408315641 in words is "four hundred eight million, three hundred fifteen thousand, six hundred forty-one".