38533993 has 8 divisors (see below), whose sum is σ = 40271616. Its totient is φ = 36801600.

The previous prime is 38533987. The next prime is 38534009. The reversal of 38533993 is 39933583.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38533993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38533493) 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, 27633 + ... + 28993.

It is an arithmetic number, because the mean of its divisors is an integer number (5033952).

Almost surely, 2^38533993 is an apocalyptic number.

It is an amenable number.

38533993 is a deficient number, since it is larger than the sum of its proper divisors (1737623).

38533993 is a wasteful number, since it uses less digits than its factorization.

38533993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 262440, while the sum is 43.

The square root of 38533993 is about 6207.5754526224. The cubic root of 38533993 is about 337.7650205543.

The spelling of 38533993 in words is "thirty-eight million, five hundred thirty-three thousand, nine hundred ninety-three".