89224821 has 20 divisors (see below), whose sum is σ = 152328352. Its totient is φ = 50985288.

The previous prime is 89224801. The next prime is 89224867. The reversal of 89224821 is 12842298.

It is not a de Polignac number, because 89224821 - 2⁶ = 89224757 is a prime.

It is a super-2 number, since 2×89224821² = 15922137364964082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89224801) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78115 + ... + 79248.

Almost surely, 2^89224821 is an apocalyptic number.

89224821 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

89224821 is a deficient number, since it is larger than the sum of its proper divisors (63103531).

89224821 is a wasteful number, since it uses less digits than its factorization.

89224821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157382 (or 157373 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 89224821 is about 9445.8891058492. The cubic root of 89224821 is about 446.8501366903.

The spelling of 89224821 in words is "eighty-nine million, two hundred twenty-four thousand, eight hundred twenty-one".