139996739 has 2 divisors, whose sum is σ = 139996740. Its totient is φ = 139996738.

The previous prime is 139996721. The next prime is 139996757. The reversal of 139996739 is 937699931.

It is a balanced prime because it is at equal distance from previous prime (139996721) and next prime (139996757).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139996739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139996709) 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, 69998369 + 69998370.

It is an arithmetic number, because the mean of its divisors is an integer number (69998370).

Almost surely, 2^139996739 is an apocalyptic number.

139996739 is a deficient number, since it is larger than the sum of its proper divisors (1).

139996739 is an equidigital number, since it uses as much as digits as its factorization.

139996739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2480058, while the sum is 56.

The square root of 139996739 is about 11832.0217629955. The cubic root of 139996739 is about 519.2453785530.

The spelling of 139996739 in words is "one hundred thirty-nine million, nine hundred ninety-six thousand, seven hundred thirty-nine".