89218901 has 2 divisors, whose sum is σ = 89218902. Its totient is φ = 89218900.

The previous prime is 89218859. The next prime is 89218903. The reversal of 89218901 is 10981298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80982001 + 8236900 = 8999^2 + 2870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89218901 is a prime.

Together with 89218903, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89218903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44609450 + 44609451.

It is an arithmetic number, because the mean of its divisors is an integer number (44609451).

Almost surely, 2^89218901 is an apocalyptic number.

It is an amenable number.

89218901 is a deficient number, since it is larger than the sum of its proper divisors (1).

89218901 is an equidigital number, since it uses as much as digits as its factorization.

89218901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 89218901 is about 9445.5757368199. The cubic root of 89218901 is about 446.8402537478.

The spelling of 89218901 in words is "eighty-nine million, two hundred eighteen thousand, nine hundred one".