3951939264 has 336 divisors, whose sum is σ = 13136928768. Its totient is φ = 1026514944.

The previous prime is 3951939263. The next prime is 3951939287. The reversal of 3951939264 is 4629391593.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3951939263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28846204 + ... + 28846340.

Almost surely, 2^3951939264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3951939264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6568464384).

3951939264 is an abundant number, since it is smaller than the sum of its proper divisors (9184989504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3951939264 is a wasteful number, since it uses less digits than its factorization.

3951939264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 289 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 51.

The square root of 3951939264 is about 62864.4515127588. The cubic root of 3951939264 is about 1581.0177793221.

The spelling of 3951939264 in words is "three billion, nine hundred fifty-one million, nine hundred thirty-nine thousand, two hundred sixty-four".