402509113 has 2 divisors, whose sum is σ = 402509114. Its totient is φ = 402509112.

The previous prime is 402509099. The next prime is 402509117. The reversal of 402509113 is 311905204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402082704 + 426409 = 20052^2 + 653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402509113 is a prime.

It is not a weakly prime, because it can be changed into another prime (402509117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201254556 + 201254557.

It is an arithmetic number, because the mean of its divisors is an integer number (201254557).

Almost surely, 2^402509113 is an apocalyptic number.

It is an amenable number.

402509113 is a deficient number, since it is larger than the sum of its proper divisors (1).

402509113 is an equidigital number, since it uses as much as digits as its factorization.

402509113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 402509113 is about 20062.6297628202. The cubic root of 402509113 is about 738.3436981607.

The spelling of 402509113 in words is "four hundred two million, five hundred nine thousand, one hundred thirteen".