3949851737 has 16 divisors (see below), whose sum is σ = 4361774592. Its totient is φ = 3554496000.

The previous prime is 3949851733. The next prime is 3949851739. The reversal of 3949851737 is 7371589493.

It is a cyclic number.

It is not a de Polignac number, because 3949851737 - 2² = 3949851733 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3949851733) 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, 61112 + ... + 107862.

It is an arithmetic number, because the mean of its divisors is an integer number (272610912).

Almost surely, 2^3949851737 is an apocalyptic number.

It is an amenable number.

3949851737 is a deficient number, since it is larger than the sum of its proper divisors (411922855).

3949851737 is a wasteful number, since it uses less digits than its factorization.

3949851737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46928.

The product of its digits is 5715360, while the sum is 56.

The square root of 3949851737 is about 62847.8459217180. The cubic root of 3949851737 is about 1580.7393507350.

The spelling of 3949851737 in words is "three billion, nine hundred forty-nine million, eight hundred fifty-one thousand, seven hundred thirty-seven".