39288397 has 2 divisors, whose sum is σ = 39288398. Its totient is φ = 39288396.

The previous prime is 39288391. The next prime is 39288401. The reversal of 39288397 is 79388293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20331081 + 18957316 = 4509^2 + 4354^2 .

It is a cyclic number.

It is not a de Polignac number, because 39288397 - 2⁷ = 39288269 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 39288397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39288391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19644198 + 19644199.

It is an arithmetic number, because the mean of its divisors is an integer number (19644199).

Almost surely, 2^39288397 is an apocalyptic number.

It is an amenable number.

39288397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39288397 is an equidigital number, since it uses as much as digits as its factorization.

39288397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 39288397 is about 6268.0457081933. The cubic root of 39288397 is about 339.9550026956.

The spelling of 39288397 in words is "thirty-nine million, two hundred eighty-eight thousand, three hundred ninety-seven".