38123979 has 8 divisors (see below), whose sum is σ = 53822160. Its totient is φ = 23920896.

The previous prime is 38123977. The next prime is 38123983. The reversal of 38123979 is 97932183.

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

It is not a de Polignac number, because 38123979 - 2¹ = 38123977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38123979.

It is not an unprimeable number, because it can be changed into a prime (38123977) 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, 373714 + ... + 373815.

It is an arithmetic number, because the mean of its divisors is an integer number (6727770).

Almost surely, 2^38123979 is an apocalyptic number.

38123979 is a deficient number, since it is larger than the sum of its proper divisors (15698181).

38123979 is a wasteful number, since it uses less digits than its factorization.

38123979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747549.

The product of its digits is 81648, while the sum is 42.

The square root of 38123979 is about 6174.4618388974. The cubic root of 38123979 is about 336.5627703892.

The spelling of 38123979 in words is "thirty-eight million, one hundred twenty-three thousand, nine hundred seventy-nine".