38117021 has 4 divisors (see below), whose sum is σ = 40123200. Its totient is φ = 36110844.

The previous prime is 38116979. The next prime is 38117029. The reversal of 38117021 is 12071183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38117021 - 2¹⁰ = 38115997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38117029) 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, 1003061 + ... + 1003098.

It is an arithmetic number, because the mean of its divisors is an integer number (10030800).

Almost surely, 2^38117021 is an apocalyptic number.

It is an amenable number.

38117021 is a deficient number, since it is larger than the sum of its proper divisors (2006179).

38117021 is a wasteful number, since it uses less digits than its factorization.

38117021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006178.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 38117021 is about 6173.8983632710. The cubic root of 38117021 is about 336.5422938081.

The spelling of 38117021 in words is "thirty-eight million, one hundred seventeen thousand, twenty-one".