39459408797 has 2 divisors, whose sum is σ = 39459408798. Its totient is φ = 39459408796.

The previous prime is 39459408763. The next prime is 39459408809. The reversal of 39459408797 is 79780495493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38771972836 + 687435961 = 196906^2 + 26219^2 .

It is a cyclic number.

It is not a de Polignac number, because 39459408797 - 2²² = 39455214493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39459408707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19729704398 + 19729704399.

It is an arithmetic number, because the mean of its divisors is an integer number (19729704399).

Almost surely, 2^39459408797 is an apocalyptic number.

It is an amenable number.

39459408797 is a deficient number, since it is larger than the sum of its proper divisors (1).

39459408797 is an equidigital number, since it uses as much as digits as its factorization.

39459408797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 39459408797 in words is "thirty-nine billion, four hundred fifty-nine million, four hundred eight thousand, seven hundred ninety-seven".