89509073 has 2 divisors, whose sum is σ = 89509074. Its totient is φ = 89509072.

The previous prime is 89509033. The next prime is 89509093. The reversal of 89509073 is 37090598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83594449 + 5914624 = 9143^2 + 2432^2 .

It is a cyclic number.

It is not a de Polignac number, because 89509073 - 2¹⁰ = 89508049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89509073.

It is not a weakly prime, because it can be changed into another prime (89509003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44754536 + 44754537.

It is an arithmetic number, because the mean of its divisors is an integer number (44754537).

Almost surely, 2^89509073 is an apocalyptic number.

It is an amenable number.

89509073 is a deficient number, since it is larger than the sum of its proper divisors (1).

89509073 is an equidigital number, since it uses as much as digits as its factorization.

89509073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 89509073 is about 9460.9234750102. The cubic root of 89509073 is about 447.3241579972.

The spelling of 89509073 in words is "eighty-nine million, five hundred nine thousand, seventy-three".