3139966739 has 32 divisors (see below), whose sum is σ = 4088039424. Its totient is φ = 2343686400.

The previous prime is 3139966721. The next prime is 3139966747. The reversal of 3139966739 is 9376699313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3139966739 - 2¹² = 3139962643 is a prime.

It is a super-2 number, since 2×3139966739² = 19718782244052588242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3139966799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142514 + ... + 163064.

It is an arithmetic number, because the mean of its divisors is an integer number (127751232).

Almost surely, 2^3139966739 is an apocalyptic number.

3139966739 is a deficient number, since it is larger than the sum of its proper divisors (948072685).

3139966739 is a wasteful number, since it uses less digits than its factorization.

3139966739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20667.

The product of its digits is 4960116, while the sum is 56.

The square root of 3139966739 is about 56035.4061197026. The cubic root of 3139966739 is about 1464.3391800435.

The spelling of 3139966739 in words is "three billion, one hundred thirty-nine million, nine hundred sixty-six thousand, seven hundred thirty-nine".