3959872 has 28 divisors (see below), whose sum is σ = 8981440. Its totient is φ = 1696896.

The previous prime is 3959869. The next prime is 3959873. The reversal of 3959872 is 2789593.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (3959873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3972 + ... + 4867.

Almost surely, 2^3959872 is an apocalyptic number.

3959872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3959872 is an abundant number, since it is smaller than the sum of its proper divisors (5021568).

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

3959872 is an equidigital number, since it uses as much as digits as its factorization.

3959872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858 (or 8848 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 3959872 is about 1989.9427127433. The cubic root of 3959872 is about 158.2074932401.

The spelling of 3959872 in words is "three million, nine hundred fifty-nine thousand, eight hundred seventy-two".