89023771957 has 2 divisors, whose sum is σ = 89023771958. Its totient is φ = 89023771956.

The previous prime is 89023771919. The next prime is 89023771961. The reversal of 89023771957 is 75917732098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88560403281 + 463368676 = 297591^2 + 21526^2 .

It is a cyclic number.

It is not a de Polignac number, because 89023771957 - 2³¹ = 86876288309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89023771987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44511885978 + 44511885979.

It is an arithmetic number, because the mean of its divisors is an integer number (44511885979).

Almost surely, 2^89023771957 is an apocalyptic number.

It is an amenable number.

89023771957 is a deficient number, since it is larger than the sum of its proper divisors (1).

89023771957 is an equidigital number, since it uses as much as digits as its factorization.

89023771957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The spelling of 89023771957 in words is "eighty-nine billion, twenty-three million, seven hundred seventy-one thousand, nine hundred fifty-seven".