38707993 has 8 divisors (see below), whose sum is σ = 39401856. Its totient is φ = 38018400.

The previous prime is 38707987. The next prime is 38708023. The reversal of 38707993 is 39970783.

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

It is a cyclic number.

It is not a de Polignac number, because 38707993 - 2²¹ = 36610841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38707913) 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, 21205 + ... + 22957.

It is an arithmetic number, because the mean of its divisors is an integer number (4925232).

Almost surely, 2^38707993 is an apocalyptic number.

It is an amenable number.

38707993 is a deficient number, since it is larger than the sum of its proper divisors (693863).

38707993 is a wasteful number, since it uses less digits than its factorization.

38707993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 38707993 is about 6221.5748006433. The cubic root of 38707993 is about 338.2726491878.

The spelling of 38707993 in words is "thirty-eight million, seven hundred seven thousand, nine hundred ninety-three".