89471761 has 2 divisors, whose sum is σ = 89471762. Its totient is φ = 89471760.

The previous prime is 89471747. The next prime is 89471783. The reversal of 89471761 is 16717498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77088400 + 12383361 = 8780^2 + 3519^2 .

It is a cyclic number.

It is not a de Polignac number, because 89471761 - 2⁵ = 89471729 is a prime.

It is a super-2 number, since 2×89471761² = 16010392032882242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89471461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44735880 + 44735881.

It is an arithmetic number, because the mean of its divisors is an integer number (44735881).

Almost surely, 2^89471761 is an apocalyptic number.

It is an amenable number.

89471761 is a deficient number, since it is larger than the sum of its proper divisors (1).

89471761 is an equidigital number, since it uses as much as digits as its factorization.

89471761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 89471761 is about 9458.9513689415. The cubic root of 89471761 is about 447.2619934288.

The spelling of 89471761 in words is "eighty-nine million, four hundred seventy-one thousand, seven hundred sixty-one".