3988972 has 24 divisors (see below), whose sum is σ = 7705152. Its totient is φ = 1795200.

The previous prime is 3988969. The next prime is 3988991. The reversal of 3988972 is 2798893.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1197 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (321048).

Almost surely, 2^3988972 is an apocalyptic number.

It is an amenable number.

3988972 is a deficient number, since it is larger than the sum of its proper divisors (3716180).

3988972 is a wasteful number, since it uses less digits than its factorization.

3988972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929 (or 1927 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 3988972 is about 1997.2410971137. The cubic root of 3988972 is about 158.5940887687.

The spelling of 3988972 in words is "three million, nine hundred eighty-eight thousand, nine hundred seventy-two".