39297397 has 2 divisors, whose sum is σ = 39297398. Its totient is φ = 39297396.

The previous prime is 39297389. The next prime is 39297431. The reversal of 39297397 is 79379293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20557156 + 18740241 = 4534^2 + 4329^2 .

It is a cyclic number.

It is not a de Polignac number, because 39297397 - 2³ = 39297389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39297397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39297337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19648698 + 19648699.

It is an arithmetic number, because the mean of its divisors is an integer number (19648699).

Almost surely, 2^39297397 is an apocalyptic number.

It is an amenable number.

39297397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39297397 is an equidigital number, since it uses as much as digits as its factorization.

39297397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 49.

The square root of 39297397 is about 6268.7635942026. The cubic root of 39297397 is about 339.9809591413.

The spelling of 39297397 in words is "thirty-nine million, two hundred ninety-seven thousand, three hundred ninety-seven".