3949976920 has 64 divisors (see below), whose sum is σ = 9069732000. Its totient is φ = 1547796480.

The previous prime is 3949976917. The next prime is 3949976939. The reversal of 3949976920 is 296799493.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623931 + ... + 630229.

Almost surely, 2^3949976920 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 3949976920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4534866000).

3949976920 is an abundant number, since it is smaller than the sum of its proper divisors (5119755080).

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

3949976920 is a wasteful number, since it uses less digits than its factorization.

3949976920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6628 (or 6624 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 58.

The square root of 3949976920 is about 62848.8418349933. The cubic root of 3949976920 is about 1580.7560500625.

The spelling of 3949976920 in words is "three billion, nine hundred forty-nine million, nine hundred seventy-six thousand, nine hundred twenty".