89898569 has 2 divisors, whose sum is σ = 89898570. Its totient is φ = 89898568.

The previous prime is 89898541. The next prime is 89898577. The reversal of 89898569 is 96589898.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70644025 + 19254544 = 8405^2 + 4388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89898569 is a prime.

It is a super-2 number, since 2×89898569² = 16163505416495522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89898269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44949284 + 44949285.

It is an arithmetic number, because the mean of its divisors is an integer number (44949285).

Almost surely, 2^89898569 is an apocalyptic number.

It is an amenable number.

89898569 is a deficient number, since it is larger than the sum of its proper divisors (1).

89898569 is an equidigital number, since it uses as much as digits as its factorization.

89898569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 62.

The square root of 89898569 is about 9481.4855903492. The cubic root of 89898569 is about 447.9720582727.

The spelling of 89898569 in words is "eighty-nine million, eight hundred ninety-eight thousand, five hundred sixty-nine".