38721079 has 4 divisors (see below), whose sum is σ = 38734240. Its totient is φ = 38707920.

The previous prime is 38721073. The next prime is 38721083. The reversal of 38721079 is 97012783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97012783 = 7 ⋅13858969.

It is a cyclic number.

It is not a de Polignac number, because 38721079 - 2³ = 38721071 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 (38721071) 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, 82 + ... + 8800.

It is an arithmetic number, because the mean of its divisors is an integer number (9683560).

Almost surely, 2^38721079 is an apocalyptic number.

38721079 is a deficient number, since it is larger than the sum of its proper divisors (13161).

38721079 is an equidigital number, since it uses as much as digits as its factorization.

38721079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 38721079 is about 6222.6263747713. The cubic root of 38721079 is about 338.3107648051.

The spelling of 38721079 in words is "thirty-eight million, seven hundred twenty-one thousand, seventy-nine".