139674937 has 2 divisors, whose sum is σ = 139674938. Its totient is φ = 139674936.

The previous prime is 139674919. The next prime is 139674943. The reversal of 139674937 is 739476931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112593321 + 27081616 = 10611^2 + 5204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139674937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139674037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69837468 + 69837469.

It is an arithmetic number, because the mean of its divisors is an integer number (69837469).

Almost surely, 2^139674937 is an apocalyptic number.

It is an amenable number.

139674937 is a deficient number, since it is larger than the sum of its proper divisors (1).

139674937 is an equidigital number, since it uses as much as digits as its factorization.

139674937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 49.

The square root of 139674937 is about 11818.4151644795. The cubic root of 139674937 is about 518.8472207197.

The spelling of 139674937 in words is "one hundred thirty-nine million, six hundred seventy-four thousand, nine hundred thirty-seven".