3139629661 has 4 divisors (see below), whose sum is σ = 3588148192. Its totient is φ = 2691111132.

The previous prime is 3139629641. The next prime is 3139629667. The reversal of 3139629661 is 1669269313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3139629661 - 2⁷ = 3139629533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3139629667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224259255 + ... + 224259268.

It is an arithmetic number, because the mean of its divisors is an integer number (897037048).

Almost surely, 2^3139629661 is an apocalyptic number.

It is an amenable number.

3139629661 is a deficient number, since it is larger than the sum of its proper divisors (448518531).

3139629661 is an equidigital number, since it uses as much as digits as its factorization.

3139629661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448518530.

The product of its digits is 314928, while the sum is 46.

The square root of 3139629661 is about 56032.3983156174. The cubic root of 3139629661 is about 1464.2867788318.

The spelling of 3139629661 in words is "three billion, one hundred thirty-nine million, six hundred twenty-nine thousand, six hundred sixty-one".