89170397 has 2 divisors, whose sum is σ = 89170398. Its totient is φ = 89170396.

The previous prime is 89170387. The next prime is 89170409. The reversal of 89170397 is 79307198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80532676 + 8637721 = 8974^2 + 2939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89170397 is a prime.

It is a super-2 number, since 2×89170397² = 15902719402275218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89170337) 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, 44585198 + 44585199.

It is an arithmetic number, because the mean of its divisors is an integer number (44585199).

Almost surely, 2^89170397 is an apocalyptic number.

89170397 is the 5048-th centered heptagonal number.

It is an amenable number.

89170397 is a deficient number, since it is larger than the sum of its proper divisors (1).

89170397 is an equidigital number, since it uses as much as digits as its factorization.

89170397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 89170397 is about 9443.0078364894. The cubic root of 89170397 is about 446.7592639268.

The spelling of 89170397 in words is "eighty-nine million, one hundred seventy thousand, three hundred ninety-seven".