3147056639 has 16 divisors (see below), whose sum is σ = 3250316160. Its totient is φ = 3045181440.

The previous prime is 3147056617. The next prime is 3147056641. The reversal of 3147056639 is 9366507413.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3147056639 - 2¹² = 3147052543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3147056639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147056699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3301787 + ... + 3302739.

It is an arithmetic number, because the mean of its divisors is an integer number (203144760).

Almost surely, 2^3147056639 is an apocalyptic number.

3147056639 is a deficient number, since it is larger than the sum of its proper divisors (103259521).

3147056639 is a wasteful number, since it uses less digits than its factorization.

3147056639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 3147056639 is about 56098.6331295157. The cubic root of 3147056639 is about 1465.4404883230.

The spelling of 3147056639 in words is "three billion, one hundred forty-seven million, fifty-six thousand, six hundred thirty-nine".