89226821 has 16 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 82057008.

The previous prime is 89226817. The next prime is 89226827. The reversal of 89226821 is 12862298.

It is not a de Polignac number, because 89226821 - 2² = 89226817 is a prime.

It is a super-2 number, since 2×89226821² = 15922851171532082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89226827) 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, 63080 + ... + 64478.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^89226821 is an apocalyptic number.

It is an amenable number.

89226821 is a deficient number, since it is larger than the sum of its proper divisors (7541179).

89226821 is a wasteful number, since it uses less digits than its factorization.

89226821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its digits is 27648, while the sum is 38.

The square root of 89226821 is about 9445.9949714151. The cubic root of 89226821 is about 446.8534754234.

The spelling of 89226821 in words is "eighty-nine million, two hundred twenty-six thousand, eight hundred twenty-one".