3969992 has 32 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1798464.

The previous prime is 3969983. The next prime is 3969997. The reversal of 3969992 is 2999693.

3969992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3969997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5813 + ... + 6459.

It is an arithmetic number, because the mean of its divisors is an integer number (255150).

Almost surely, 2^3969992 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 3969992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4082400).

3969992 is an abundant number, since it is smaller than the sum of its proper divisors (4194808).

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

3969992 is a wasteful number, since it uses less digits than its factorization.

3969992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 721 counting only the distinct ones).

The product of its digits is 236196, while the sum is 47.

The square root of 3969992 is about 1992.4838769737. The cubic root of 3969992 is about 158.3421522943.

Subtracting from 3969992 its reverse (2999693), we obtain a cube (970299 = 99³).

The spelling of 3969992 in words is "three million, nine hundred sixty-nine thousand, nine hundred ninety-two".