88939621 has 4 divisors (see below), whose sum is σ = 89052012. Its totient is φ = 88827232.

The previous prime is 88939603. The next prime is 88939633. The reversal of 88939621 is 12693988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67650625 + 21288996 = 8225^2 + 4614^2 .

It is a cyclic number.

It is not a de Polignac number, because 88939621 - 2⁷ = 88939493 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 (88939661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55000 + ... + 56593.

It is an arithmetic number, because the mean of its divisors is an integer number (22263003).

Almost surely, 2^88939621 is an apocalyptic number.

It is an amenable number.

88939621 is a deficient number, since it is larger than the sum of its proper divisors (112391).

88939621 is a wasteful number, since it uses less digits than its factorization.

88939621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112390.

The product of its digits is 186624, while the sum is 46.

The square root of 88939621 is about 9430.7805085263. The cubic root of 88939621 is about 446.3735216076.

The spelling of 88939621 in words is "eighty-eight million, nine hundred thirty-nine thousand, six hundred twenty-one".