38689879 has 4 divisors (see below), whose sum is σ = 38709576. Its totient is φ = 38670184.

The previous prime is 38689867. The next prime is 38689907. The reversal of 38689879 is 97898683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97898683 = 5303 ⋅18461.

It is a cyclic number.

It is not a de Polignac number, because 38689879 - 2⁷ = 38689751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38689579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6529 + ... + 10954.

It is an arithmetic number, because the mean of its divisors is an integer number (9677394).

Almost surely, 2^38689879 is an apocalyptic number.

38689879 is a deficient number, since it is larger than the sum of its proper divisors (19697).

38689879 is a wasteful number, since it uses less digits than its factorization.

38689879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19696.

The product of its digits is 5225472, while the sum is 58.

The square root of 38689879 is about 6220.1188895390. The cubic root of 38689879 is about 338.2198743270.

The spelling of 38689879 in words is "thirty-eight million, six hundred eighty-nine thousand, eight hundred seventy-nine".