89960372921 has 2 divisors, whose sum is σ = 89960372922. Its totient is φ = 89960372920.

The previous prime is 89960372899. The next prime is 89960372927. The reversal of 89960372921 is 12927306998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48064423696 + 41895949225 = 219236^2 + 204685^2 .

It is a cyclic number.

It is not a de Polignac number, because 89960372921 - 2¹⁸ = 89960110777 is a prime.

It is not a weakly prime, because it can be changed into another prime (89960372927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44980186460 + 44980186461.

It is an arithmetic number, because the mean of its divisors is an integer number (44980186461).

Almost surely, 2^89960372921 is an apocalyptic number.

It is an amenable number.

89960372921 is a deficient number, since it is larger than the sum of its proper divisors (1).

89960372921 is an equidigital number, since it uses as much as digits as its factorization.

89960372921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 89960372921 in words is "eighty-nine billion, nine hundred sixty million, three hundred seventy-two thousand, nine hundred twenty-one".