3929747923 has 16 divisors (see below), whose sum is σ = 4039200000. Its totient is φ = 3821967072.

The previous prime is 3929747909. The next prime is 3929747933. The reversal of 3929747923 is 3297479293.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3929747923 - 2¹⁷ = 3929616851 is a prime.

It is a super-3 number, since 3×3929747923³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3929747933) 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, 2312128 + ... + 2313826.

It is an arithmetic number, because the mean of its divisors is an integer number (252450000).

Almost surely, 2^3929747923 is an apocalyptic number.

3929747923 is a deficient number, since it is larger than the sum of its proper divisors (109452077).

3929747923 is a wasteful number, since it uses less digits than its factorization.

3929747923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its digits is 5143824, while the sum is 55.

The square root of 3929747923 is about 62687.7015290878. The cubic root of 3929747923 is about 1578.0529242842.

The spelling of 3929747923 in words is "three billion, nine hundred twenty-nine million, seven hundred forty-seven thousand, nine hundred twenty-three".