139600837 has 2 divisors, whose sum is σ = 139600838. Its totient is φ = 139600836.

The previous prime is 139600831. The next prime is 139600849. The reversal of 139600837 is 738006931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116618401 + 22982436 = 10799^2 + 4794^2 .

It is an emirp because it is prime and its reverse (738006931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139600837 - 2³ = 139600829 is a prime.

It is a super-2 number, since 2×139600837² = 38976787382201138, which contains 22 as substring.

It is equal to p_7890841 and since 139600837 and 7890841 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 139600796 and 139600805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139600831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69800418 + 69800419.

It is an arithmetic number, because the mean of its divisors is an integer number (69800419).

Almost surely, 2^139600837 is an apocalyptic number.

It is an amenable number.

139600837 is a deficient number, since it is larger than the sum of its proper divisors (1).

139600837 is an equidigital number, since it uses as much as digits as its factorization.

139600837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 139600837 is about 11815.2798104827. The cubic root of 139600837 is about 518.7554519773.

The spelling of 139600837 in words is "one hundred thirty-nine million, six hundred thousand, eight hundred thirty-seven".