89688397 has 2 divisors, whose sum is σ = 89688398. Its totient is φ = 89688396.

The previous prime is 89688373. The next prime is 89688409. The reversal of 89688397 is 79388698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88755241 + 933156 = 9421^2 + 966^2 .

It is a cyclic number.

It is not a de Polignac number, because 89688397 - 2¹⁹ = 89164109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89688307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44844198 + 44844199.

It is an arithmetic number, because the mean of its divisors is an integer number (44844199).

Almost surely, 2^89688397 is an apocalyptic number.

It is an amenable number.

89688397 is a deficient number, since it is larger than the sum of its proper divisors (1).

89688397 is an equidigital number, since it uses as much as digits as its factorization.

89688397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 58.

The square root of 89688397 is about 9470.3958206614. The cubic root of 89688397 is about 447.6226843383.

The spelling of 89688397 in words is "eighty-nine million, six hundred eighty-eight thousand, three hundred ninety-seven".