89539817 has 2 divisors, whose sum is σ = 89539818. Its totient is φ = 89539816.

The previous prime is 89539787. The next prime is 89539831. The reversal of 89539817 is 71893598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88435216 + 1104601 = 9404^2 + 1051^2 .

It is a cyclic number.

It is not a de Polignac number, because 89539817 - 2⁶ = 89539753 is a prime.

It is not a weakly prime, because it can be changed into another prime (89539117) 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, 44769908 + 44769909.

It is an arithmetic number, because the mean of its divisors is an integer number (44769909).

Almost surely, 2^89539817 is an apocalyptic number.

It is an amenable number.

89539817 is a deficient number, since it is larger than the sum of its proper divisors (1).

89539817 is an equidigital number, since it uses as much as digits as its factorization.

89539817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The square root of 89539817 is about 9462.5481240520. The cubic root of 89539817 is about 447.3753668084.

The spelling of 89539817 in words is "eighty-nine million, five hundred thirty-nine thousand, eight hundred seventeen".