99722589 has 4 divisors (see below), whose sum is σ = 132963456. Its totient is φ = 66481724.

The previous prime is 99722587. The next prime is 99722611. The reversal of 99722589 is 98522799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99722589 - 2¹ = 99722587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99722587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16620429 + ... + 16620434.

It is an arithmetic number, because the mean of its divisors is an integer number (33240864).

Almost surely, 2^99722589 is an apocalyptic number.

It is an amenable number.

99722589 is a deficient number, since it is larger than the sum of its proper divisors (33240867).

99722589 is a wasteful number, since it uses less digits than its factorization.

99722589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33240866.

The product of its digits is 816480, while the sum is 51.

The square root of 99722589 is about 9986.1198170260. The cubic root of 99722589 is about 463.7292765906.

It can be divided in two parts, 9972 and 2589, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 99722589 in words is "ninety-nine million, seven hundred twenty-two thousand, five hundred eighty-nine".