88438221 has 12 divisors (see below), whose sum is σ = 128233248. Its totient is φ = 58733064.

The previous prime is 88438213. The next prime is 88438223. The reversal of 88438221 is 12283488.

It is a happy number.

It is not a de Polignac number, because 88438221 - 2³ = 88438213 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88438223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16315 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (10686104).

Almost surely, 2^88438221 is an apocalyptic number.

It is an amenable number.

88438221 is a deficient number, since it is larger than the sum of its proper divisors (39795027).

88438221 is a wasteful number, since it uses less digits than its factorization.

88438221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37632 (or 37629 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 88438221 is about 9404.1597710800. The cubic root of 88438221 is about 445.5331252979.

The spelling of 88438221 in words is "eighty-eight million, four hundred thirty-eight thousand, two hundred twenty-one".