38139984 has 50 divisors (see below), whose sum is σ = 110391930. Its totient is φ = 12712896.

The previous prime is 38139979. The next prime is 38140009. The reversal of 38139984 is 48993183.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 685584 = 6120^2 + 828^2 .

It is a nude number because it is divisible by every one of its digits.

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 9 ways as a sum of consecutive naturals, for example, 13419 + ... + 16010.

Almost surely, 2^38139984 is an apocalyptic number.

It is an amenable number.

38139984 is an abundant number, since it is smaller than the sum of its proper divisors (72251946).

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

38139984 is a wasteful number, since it uses less digits than its factorization.

38139984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29449 (or 29434 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 38139984 is about 6175.7577672703. The cubic root of 38139984 is about 336.6098617794.

The spelling of 38139984 in words is "thirty-eight million, one hundred thirty-nine thousand, nine hundred eighty-four".