89251969 has 2 divisors, whose sum is σ = 89251970. Its totient is φ = 89251968.

The previous prime is 89251951. The next prime is 89251979. The reversal of 89251969 is 96915298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79423744 + 9828225 = 8912^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 89251969 - 2¹¹ = 89249921 is a prime.

It is a super-2 number, since 2×89251969² = 15931827940753922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89251979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44625984 + 44625985.

It is an arithmetic number, because the mean of its divisors is an integer number (44625985).

Almost surely, 2^89251969 is an apocalyptic number.

It is an amenable number.

89251969 is a deficient number, since it is larger than the sum of its proper divisors (1).

89251969 is an equidigital number, since it uses as much as digits as its factorization.

89251969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 49.

The square root of 89251969 is about 9447.3260238017. The cubic root of 89251969 is about 446.8954523966.

The spelling of 89251969 in words is "eighty-nine million, two hundred fifty-one thousand, nine hundred sixty-nine".