3968929731 has 16 divisors (see below), whose sum is σ = 5715140256. Its totient is φ = 2435490816.

The previous prime is 3968929709. The next prime is 3968929739. The reversal of 3968929731 is 1379298693.

3968929731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3968929731 - 2⁷ = 3968929603 is a prime.

It is a super-2 number, since 2×3968929731² = 31504806419231464722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3968929739) 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, 130380 + ... + 157913.

It is an arithmetic number, because the mean of its divisors is an integer number (357196266).

Almost surely, 2^3968929731 is an apocalyptic number.

3968929731 is a deficient number, since it is larger than the sum of its proper divisors (1746210525).

3968929731 is a wasteful number, since it uses less digits than its factorization.

3968929731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288662.

The product of its digits is 4408992, while the sum is 57.

The square root of 3968929731 is about 62999.4423070554. The cubic root of 3968929731 is about 1583.2802825537.

The spelling of 3968929731 in words is "three billion, nine hundred sixty-eight million, nine hundred twenty-nine thousand, seven hundred thirty-one".