89688251 has 2 divisors, whose sum is σ = 89688252. Its totient is φ = 89688250.

The previous prime is 89688187. The next prime is 89688257. The reversal of 89688251 is 15288698.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89688251 - 2⁶ = 89688187 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 89688196 and 89688205.

It is not a weakly prime, because it can be changed into another prime (89688257) 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, 44844125 + 44844126.

It is an arithmetic number, because the mean of its divisors is an integer number (44844126).

Almost surely, 2^89688251 is an apocalyptic number.

89688251 is a deficient number, since it is larger than the sum of its proper divisors (1).

89688251 is an equidigital number, since it uses as much as digits as its factorization.

89688251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 47.

The square root of 89688251 is about 9470.3881124271. The cubic root of 89688251 is about 447.6224414494.

The spelling of 89688251 in words is "eighty-nine million, six hundred eighty-eight thousand, two hundred fifty-one".