89722579 has 16 divisors (see below), whose sum is σ = 96378880. Its totient is φ = 83512296.

The previous prime is 89722571. The next prime is 89722597. The reversal of 89722579 is 97522798.

It is not a de Polignac number, because 89722579 - 2³ = 89722571 is a prime.

It is a super-3 number, since 3×89722579³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89722571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706414 + ... + 706540.

It is an arithmetic number, because the mean of its divisors is an integer number (6023680).

Almost surely, 2^89722579 is an apocalyptic number.

89722579 is a deficient number, since it is larger than the sum of its proper divisors (6656301).

89722579 is a wasteful number, since it uses less digits than its factorization.

89722579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 249 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The square root of 89722579 is about 9472.2003251620. The cubic root of 89722579 is about 447.6795430318.

The spelling of 89722579 in words is "eighty-nine million, seven hundred twenty-two thousand, five hundred seventy-nine".