39790297 has 2 divisors, whose sum is σ = 39790298. Its totient is φ = 39790296.

The previous prime is 39790271. The next prime is 39790307. The reversal of 39790297 is 79209793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39677401 + 112896 = 6299^2 + 336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39790297 is a prime.

It is not a weakly prime, because it can be changed into another prime (39790397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19895148 + 19895149.

It is an arithmetic number, because the mean of its divisors is an integer number (19895149).

Almost surely, 2^39790297 is an apocalyptic number.

It is an amenable number.

39790297 is a deficient number, since it is larger than the sum of its proper divisors (1).

39790297 is an equidigital number, since it uses as much as digits as its factorization.

39790297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 39790297 is about 6307.9550569103. The cubic root of 39790297 is about 341.3964967397.

The spelling of 39790297 in words is "thirty-nine million, seven hundred ninety thousand, two hundred ninety-seven".