38655899 has 4 divisors (see below), whose sum is σ = 40690440. Its totient is φ = 36621360.

The previous prime is 38655889. The next prime is 38655901. The reversal of 38655899 is 99855683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99855683 = 47 ⋅2124589.

It is a de Polignac number, because none of the positive numbers 2^k-38655899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38655899.

It is not an unprimeable number, because it can be changed into a prime (38655809) 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, 1017242 + ... + 1017279.

It is an arithmetic number, because the mean of its divisors is an integer number (10172610).

Almost surely, 2^38655899 is an apocalyptic number.

38655899 is a deficient number, since it is larger than the sum of its proper divisors (2034541).

38655899 is a wasteful number, since it uses less digits than its factorization.

38655899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034540.

The product of its digits is 2332800, while the sum is 53.

The square root of 38655899 is about 6217.3868304940. The cubic root of 38655899 is about 338.1208296687.

The spelling of 38655899 in words is "thirty-eight million, six hundred fifty-five thousand, eight hundred ninety-nine".