139102837 has 2 divisors, whose sum is σ = 139102838. Its totient is φ = 139102836.

The previous prime is 139102811. The next prime is 139102849. The reversal of 139102837 is 738201931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130096836 + 9006001 = 11406^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 139102837 - 2¹¹ = 139100789 is a prime.

It is a super-2 number, since 2×139102837² = 38699198522897138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139102867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69551418 + 69551419.

It is an arithmetic number, because the mean of its divisors is an integer number (69551419).

Almost surely, 2^139102837 is an apocalyptic number.

It is an amenable number.

139102837 is a deficient number, since it is larger than the sum of its proper divisors (1).

139102837 is an equidigital number, since it uses as much as digits as its factorization.

139102837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 139102837 is about 11794.1865764452. The cubic root of 139102837 is about 518.1378625119.

The spelling of 139102837 in words is "one hundred thirty-nine million, one hundred two thousand, eight hundred thirty-seven".