3149704856 has 8 divisors (see below), whose sum is σ = 5905696620. Its totient is φ = 1574852424.

The previous prime is 3149704853. The next prime is 3149704861. The reversal of 3149704856 is 6584079413.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3149704856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3149704853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196856546 + ... + 196856561.

Almost surely, 2^3149704856 is an apocalyptic number.

It is an amenable number.

3149704856 is a deficient number, since it is larger than the sum of its proper divisors (2755991764).

3149704856 is a wasteful number, since it uses less digits than its factorization.

3149704856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393713113 (or 393713109 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 3149704856 is about 56122.2313882832. The cubic root of 3149704856 is about 1465.8514242984.

The spelling of 3149704856 in words is "three billion, one hundred forty-nine million, seven hundred four thousand, eight hundred fifty-six".