89336837621 has 2 divisors, whose sum is σ = 89336837622. Its totient is φ = 89336837620.

The previous prime is 89336837593. The next prime is 89336837627. The reversal of 89336837621 is 12673863398.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45716426596 + 43620411025 = 213814^2 + 208855^2 .

It is a cyclic number.

It is not a de Polignac number, because 89336837621 - 2¹⁰ = 89336836597 is a prime.

It is a super-2 number, since 2×89336837621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89336837627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44668418810 + 44668418811.

It is an arithmetic number, because the mean of its divisors is an integer number (44668418811).

Almost surely, 2^89336837621 is an apocalyptic number.

It is an amenable number.

89336837621 is a deficient number, since it is larger than the sum of its proper divisors (1).

89336837621 is an equidigital number, since it uses as much as digits as its factorization.

89336837621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 56.

The spelling of 89336837621 in words is "eighty-nine billion, three hundred thirty-six million, eight hundred thirty-seven thousand, six hundred twenty-one".