3972788 has 6 divisors (see below), whose sum is σ = 6952386. Its totient is φ = 1986392.

The previous prime is 3972757. The next prime is 3972791. The reversal of 3972788 is 8872793.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3794704 + 178084 = 1948^2 + 422^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496595 + ... + 496602.

It is an arithmetic number, because the mean of its divisors is an integer number (1158731).

Almost surely, 2^3972788 is an apocalyptic number.

It is an amenable number.

3972788 is a deficient number, since it is larger than the sum of its proper divisors (2979598).

3972788 is a wasteful number, since it uses less digits than its factorization.

3972788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993201 (or 993199 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 3972788 is about 1993.1853902736. The cubic root of 3972788 is about 158.3793161612.

It can be divided in two parts, 39 and 72788, that added together give a palindrome (72827).

The spelling of 3972788 in words is "three million, nine hundred seventy-two thousand, seven hundred eighty-eight".