38999715 has 8 divisors (see below), whose sum is σ = 62399568. Its totient is φ = 20799840.

The previous prime is 38999713. The next prime is 38999729. The reversal of 38999715 is 51799983.

It is a happy number.

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

It is not a de Polignac number, because 38999715 - 2¹ = 38999713 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38999713) 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, 1299976 + ... + 1300005.

It is an arithmetic number, because the mean of its divisors is an integer number (7799946).

Almost surely, 2^38999715 is an apocalyptic number.

38999715 is a deficient number, since it is larger than the sum of its proper divisors (23399853).

38999715 is a wasteful number, since it uses less digits than its factorization.

38999715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599989.

The product of its digits is 612360, while the sum is 51.

The square root of 38999715 is about 6244.9751800948. The cubic root of 38999715 is about 339.1203182351.

The spelling of 38999715 in words is "thirty-eight million, nine hundred ninety-nine thousand, seven hundred fifteen".