38679899 has 4 divisors (see below), whose sum is σ = 39055536. Its totient is φ = 38304264.

The previous prime is 38679871. The next prime is 38679923. The reversal of 38679899 is 99897683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38679899 - 2¹⁶ = 38614363 is a prime.

It is a super-2 number, since 2×38679899² = 2992269173300402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38679299) 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, 187664 + ... + 187869.

It is an arithmetic number, because the mean of its divisors is an integer number (9763884).

Almost surely, 2^38679899 is an apocalyptic number.

38679899 is a deficient number, since it is larger than the sum of its proper divisors (375637).

38679899 is a wasteful number, since it uses less digits than its factorization.

38679899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375636.

The product of its digits is 5878656, while the sum is 59.

The square root of 38679899 is about 6219.3166023286. The cubic root of 38679899 is about 338.1907907121.

The spelling of 38679899 in words is "thirty-eight million, six hundred seventy-nine thousand, eight hundred ninety-nine".