89223021 has 24 divisors (see below), whose sum is σ = 140155704. Its totient is φ = 54466560.

The previous prime is 89223019. The next prime is 89223023. The reversal of 89223021 is 12032298.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89223019) and next prime (89223023).

It can be written as a sum of positive squares in 4 ways, for example, as 49154121 + 40068900 = 7011^2 + 6330^2 .

It is not a de Polignac number, because 89223021 - 2¹ = 89223019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89223023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2220 + ... + 13541.

It is an arithmetic number, because the mean of its divisors is an integer number (5839821).

Almost surely, 2^89223021 is an apocalyptic number.

It is an amenable number.

89223021 is a deficient number, since it is larger than the sum of its proper divisors (50932683).

89223021 is a wasteful number, since it uses less digits than its factorization.

89223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15821 (or 15818 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 89223021 is about 9445.7938258253. The cubic root of 89223021 is about 446.8471317878.

The spelling of 89223021 in words is "eighty-nine million, two hundred twenty-three thousand, twenty-one".