89237881 has 2 divisors, whose sum is σ = 89237882. Its totient is φ = 89237880.

The previous prime is 89237873. The next prime is 89237891. The reversal of 89237881 is 18873298.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 13808656 = 8685^2 + 3716^2 .

It is a cyclic number.

It is not a de Polignac number, because 89237881 - 2³ = 89237873 is a prime.

It is a super-2 number, since 2×89237881² = 15926798810740322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89237801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44618940 + 44618941.

It is an arithmetic number, because the mean of its divisors is an integer number (44618941).

Almost surely, 2^89237881 is an apocalyptic number.

It is an amenable number.

89237881 is a deficient number, since it is larger than the sum of its proper divisors (1).

89237881 is an equidigital number, since it uses as much as digits as its factorization.

89237881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 46.

The square root of 89237881 is about 9446.5803865738. The cubic root of 89237881 is about 446.8719377168.

The spelling of 89237881 in words is "eighty-nine million, two hundred thirty-seven thousand, eight hundred eighty-one".