89898769 has 2 divisors, whose sum is σ = 89898770. Its totient is φ = 89898768.

The previous prime is 89898763. The next prime is 89898779. The reversal of 89898769 is 96789898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87609600 + 2289169 = 9360^2 + 1513^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89898769 is a prime.

It is a super-2 number, since 2×89898769² = 16163577335430722, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 89898769.

It is not a weakly prime, because it can be changed into another prime (89898763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44949384 + 44949385.

It is an arithmetic number, because the mean of its divisors is an integer number (44949385).

Almost surely, 2^89898769 is an apocalyptic number.

It is an amenable number.

89898769 is a deficient number, since it is larger than the sum of its proper divisors (1).

89898769 is an equidigital number, since it uses as much as digits as its factorization.

89898769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 64.

The square root of 89898769 is about 9481.4961372138. The cubic root of 89898769 is about 447.9723904780.

The spelling of 89898769 in words is "eighty-nine million, eight hundred ninety-eight thousand, seven hundred sixty-nine".