139411637 has 2 divisors, whose sum is σ = 139411638. Its totient is φ = 139411636.

The previous prime is 139411627. The next prime is 139411663. The reversal of 139411637 is 736114931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 3129361 = 11674^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 139411637 - 2⁴ = 139411621 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 139411597 and 139411606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139411627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69705818 + 69705819.

It is an arithmetic number, because the mean of its divisors is an integer number (69705819).

Almost surely, 2^139411637 is an apocalyptic number.

It is an amenable number.

139411637 is a deficient number, since it is larger than the sum of its proper divisors (1).

139411637 is an equidigital number, since it uses as much as digits as its factorization.

139411637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 139411637 is about 11807.2705143907. The cubic root of 139411637 is about 518.5209908594.

It can be divided in two parts, 1394 and 11637, that added together give a palindrome (13031).

The spelling of 139411637 in words is "one hundred thirty-nine million, four hundred eleven thousand, six hundred thirty-seven".