2139907597 has 2 divisors, whose sum is σ = 2139907598. Its totient is φ = 2139907596.

The previous prime is 2139907571. The next prime is 2139907621. The reversal of 2139907597 is 7957099312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1808885961 + 331021636 = 42531^2 + 18194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139907597 - 2²³ = 2131518989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2139907507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069953798 + 1069953799.

It is an arithmetic number, because the mean of its divisors is an integer number (1069953799).

Almost surely, 2^2139907597 is an apocalyptic number.

It is an amenable number.

2139907597 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139907597 is an equidigital number, since it uses as much as digits as its factorization.

2139907597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 52.

The square root of 2139907597 is about 46259.1352815852. The cubic root of 2139907597 is about 1288.6401946219.

The spelling of 2139907597 in words is "two billion, one hundred thirty-nine million, nine hundred seven thousand, five hundred ninety-seven".