38047139 has 36 divisors (see below), whose sum is σ = 47192040. Its totient is φ = 30551040.

The previous prime is 38047133. The next prime is 38047147. The reversal of 38047139 is 93174083.

It is not a de Polignac number, because 38047139 - 2⁴ = 38047123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38047099 and 38047108.

It is not an unprimeable number, because it can be changed into a prime (38047133) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 927959 + ... + 927999.

It is an arithmetic number, because the mean of its divisors is an integer number (1310890).

Almost surely, 2^38047139 is an apocalyptic number.

38047139 is a deficient number, since it is larger than the sum of its proper divisors (9144901).

38047139 is a wasteful number, since it uses less digits than its factorization.

38047139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 38047139 is about 6168.2362957332. The cubic root of 38047139 is about 336.3365009187.

The spelling of 38047139 in words is "thirty-eight million, forty-seven thousand, one hundred thirty-nine".