38943972 has 18 divisors (see below), whose sum is σ = 98441798. Its totient is φ = 12981312.

The previous prime is 38943959. The next prime is 38943979. The reversal of 38943972 is 27934983.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27815076 + 11128896 = 5274^2 + 3336^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (38943979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540853 + ... + 540924.

Almost surely, 2^38943972 is an apocalyptic number.

It is an amenable number.

38943972 is an abundant number, since it is smaller than the sum of its proper divisors (59497826).

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

38943972 is a wasteful number, since it uses less digits than its factorization.

38943972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081787 (or 1081782 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 38943972 is about 6240.5105560363. The cubic root of 38943972 is about 338.9586709216.

The spelling of 38943972 in words is "thirty-eight million, nine hundred forty-three thousand, nine hundred seventy-two".