938873021 has 8 divisors (see below), whose sum is σ = 958272000. Its totient is φ = 919603440.

The previous prime is 938873017. The next prime is 938873069. The reversal of 938873021 is 120378839.

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 938873021 - 2² = 938873017 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 938873021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938873071) 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, 17621 + ... + 46778.

It is an arithmetic number, because the mean of its divisors is an integer number (119784000).

Almost surely, 2^938873021 is an apocalyptic number.

It is an amenable number.

938873021 is a deficient number, since it is larger than the sum of its proper divisors (19398979).

938873021 is a wasteful number, since it uses less digits than its factorization.

938873021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64699.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 938873021 is about 30641.0349205114. The cubic root of 938873021 is about 979.1944723834.

The spelling of 938873021 in words is "nine hundred thirty-eight million, eight hundred seventy-three thousand, twenty-one".