38977972 has 36 divisors (see below), whose sum is σ = 77589540. Its totient is φ = 17100160.

The previous prime is 38977933. The next prime is 38977997. The reversal of 38977972 is 27977983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 26275876 = 3564^2 + 5126^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12648 + ... + 15424.

It is an arithmetic number, because the mean of its divisors is an integer number (2155265).

Almost surely, 2^38977972 is an apocalyptic number.

It is an amenable number.

38977972 is a deficient number, since it is larger than the sum of its proper divisors (38611568).

38977972 is a wasteful number, since it uses less digits than its factorization.

38977972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832 (or 2819 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 52.

The square root of 38977972 is about 6243.2340978054. The cubic root of 38977972 is about 339.0572847506.

The spelling of 38977972 in words is "thirty-eight million, nine hundred seventy-seven thousand, nine hundred seventy-two".