139345597 has 2 divisors, whose sum is σ = 139345598. Its totient is φ = 139345596.

The previous prime is 139345567. The next prime is 139345607. The reversal of 139345597 is 795543931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73719396 + 65626201 = 8586^2 + 8101^2 .

It is a cyclic number.

It is not a de Polignac number, because 139345597 - 2²⁷ = 5127869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139345517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69672798 + 69672799.

It is an arithmetic number, because the mean of its divisors is an integer number (69672799).

Almost surely, 2^139345597 is an apocalyptic number.

It is an amenable number.

139345597 is a deficient number, since it is larger than the sum of its proper divisors (1).

139345597 is an equidigital number, since it uses as much as digits as its factorization.

139345597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 46.

The square root of 139345597 is about 11804.4736011395. The cubic root of 139345597 is about 518.4391025861.

The spelling of 139345597 in words is "one hundred thirty-nine million, three hundred forty-five thousand, five hundred ninety-seven".