88993021 has 8 divisors (see below), whose sum is σ = 95927384. Its totient is φ = 82071360.

The previous prime is 88993013. The next prime is 88993031. The reversal of 88993021 is 12039988.

It can be written as a sum of positive squares in 4 ways, for example, as 11464996 + 77528025 = 3386^2 + 8805^2 .

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 88993021 - 2³ = 88993013 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 (88993031) 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, 15475 + ... + 20431.

It is an arithmetic number, because the mean of its divisors is an integer number (11990923).

Almost surely, 2^88993021 is an apocalyptic number.

It is an amenable number.

88993021 is a deficient number, since it is larger than the sum of its proper divisors (6934363).

88993021 is a wasteful number, since it uses less digits than its factorization.

88993021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 88993021 is about 9433.6112385449. The cubic root of 88993021 is about 446.4628390451.

The spelling of 88993021 in words is "eighty-eight million, nine hundred ninety-three thousand, twenty-one".