38788979 has 4 divisors (see below), whose sum is σ = 40126560. Its totient is φ = 37451400.

The previous prime is 38788973. The next prime is 38788999. The reversal of 38788979 is 97988783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97988783 = 487 ⋅201209.

It is a cyclic number.

It is not a de Polignac number, because 38788979 - 2⁴ = 38788963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38788973) 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, 668747 + ... + 668804.

It is an arithmetic number, because the mean of its divisors is an integer number (10031640).

Almost surely, 2^38788979 is an apocalyptic number.

38788979 is a deficient number, since it is larger than the sum of its proper divisors (1337581).

38788979 is a wasteful number, since it uses less digits than its factorization.

38788979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337580.

The product of its digits is 6096384, while the sum is 59.

The square root of 38788979 is about 6228.0798806695. The cubic root of 38788979 is about 338.5083995074.

The spelling of 38788979 in words is "thirty-eight million, seven hundred eighty-eight thousand, nine hundred seventy-nine".