89724859 has 16 divisors (see below), whose sum is σ = 109561600. Its totient is φ = 71764704.

The previous prime is 89724829. The next prime is 89724871. The reversal of 89724859 is 95842798.

It is a cyclic number.

It is not a de Polignac number, because 89724859 - 2¹⁷ = 89593787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89724829) 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, 3877 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (6847600).

Almost surely, 2^89724859 is an apocalyptic number.

89724859 is a deficient number, since it is larger than the sum of its proper divisors (19836741).

89724859 is a wasteful number, since it uses less digits than its factorization.

89724859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162.

The product of its digits is 1451520, while the sum is 52.

The square root of 89724859 is about 9472.3206765818. The cubic root of 89724859 is about 447.6833350937.

It can be divided in two parts, 8972 and 4859, that added together give a palindrome (13831).

The spelling of 89724859 in words is "eighty-nine million, seven hundred twenty-four thousand, eight hundred fifty-nine".