139338373 has 2 divisors, whose sum is σ = 139338374. Its totient is φ = 139338372.

The previous prime is 139338371. The next prime is 139338391. The reversal of 139338373 is 373833931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101969604 + 37368769 = 10098^2 + 6113^2 .

It is a cyclic number.

It is not a de Polignac number, because 139338373 - 2¹ = 139338371 is a prime.

Together with 139338371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139338371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69669186 + 69669187.

It is an arithmetic number, because the mean of its divisors is an integer number (69669187).

Almost surely, 2^139338373 is an apocalyptic number.

It is an amenable number.

139338373 is a deficient number, since it is larger than the sum of its proper divisors (1).

139338373 is an equidigital number, since it uses as much as digits as its factorization.

139338373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The square root of 139338373 is about 11804.1676114837. The cubic root of 139338373 is about 518.4301434014.

The spelling of 139338373 in words is "one hundred thirty-nine million, three hundred thirty-eight thousand, three hundred seventy-three".