38711999 has 4 divisors (see below), whose sum is σ = 38745960. Its totient is φ = 38678040.

The previous prime is 38711993. The next prime is 38712001. The reversal of 38711999 is 99911783.

It is a happy number.

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 38711999 - 2⁴ = 38711983 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 (38711993) 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, 15209 + ... + 17570.

It is an arithmetic number, because the mean of its divisors is an integer number (9686490).

Almost surely, 2^38711999 is an apocalyptic number.

38711999 is a deficient number, since it is larger than the sum of its proper divisors (33961).

38711999 is a wasteful number, since it uses less digits than its factorization.

38711999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33960.

The product of its digits is 122472, while the sum is 47.

The square root of 38711999 is about 6221.8967365266. The cubic root of 38711999 is about 338.2843183839.

The spelling of 38711999 in words is "thirty-eight million, seven hundred eleven thousand, nine hundred ninety-nine".