139901371 has 2 divisors, whose sum is σ = 139901372. Its totient is φ = 139901370.

The previous prime is 139901327. The next prime is 139901393. The reversal of 139901371 is 173109931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139901371 - 2²⁵ = 106346939 is a prime.

It is not a weakly prime, because it can be changed into another prime (139901071) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69950685 + 69950686.

It is an arithmetic number, because the mean of its divisors is an integer number (69950686).

Almost surely, 2^139901371 is an apocalyptic number.

139901371 is a deficient number, since it is larger than the sum of its proper divisors (1).

139901371 is an equidigital number, since it uses as much as digits as its factorization.

139901371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 139901371 is about 11827.9909959384. The cubic root of 139901371 is about 519.1274457061.

The spelling of 139901371 in words is "one hundred thirty-nine million, nine hundred one thousand, three hundred seventy-one".