397202513 has 2 divisors, whose sum is σ = 397202514. Its totient is φ = 397202512.

The previous prime is 397202497. The next prime is 397202521. The reversal of 397202513 is 315202793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342546064 + 54656449 = 18508^2 + 7393^2 .

It is a cyclic number.

It is not a de Polignac number, because 397202513 - 2⁴ = 397202497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397202513.

It is not a weakly prime, because it can be changed into another prime (397202413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198601256 + 198601257.

It is an arithmetic number, because the mean of its divisors is an integer number (198601257).

Almost surely, 2^397202513 is an apocalyptic number.

It is an amenable number.

397202513 is a deficient number, since it is larger than the sum of its proper divisors (1).

397202513 is an equidigital number, since it uses as much as digits as its factorization.

397202513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 397202513 is about 19929.9401153139. The cubic root of 397202513 is about 735.0846080891.

The spelling of 397202513 in words is "three hundred ninety-seven million, two hundred two thousand, five hundred thirteen".