38313139 has 8 divisors (see below), whose sum is σ = 40431440. Its totient is φ = 36205056.

The previous prime is 38313133. The next prime is 38313161. The reversal of 38313139 is 93131383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38313139 - 2²⁵ = 4758707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38313139.

It is not an unprimeable number, because it can be changed into a prime (38313133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5899 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (5053930).

Almost surely, 2^38313139 is an apocalyptic number.

38313139 is a deficient number, since it is larger than the sum of its proper divisors (2118301).

38313139 is a wasteful number, since it uses less digits than its factorization.

38313139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109.

The product of its digits is 5832, while the sum is 31.

The square root of 38313139 is about 6189.7608192886. The cubic root of 38313139 is about 337.1184941989.

The spelling of 38313139 in words is "thirty-eight million, three hundred thirteen thousand, one hundred thirty-nine".