89812399 has 2 divisors, whose sum is σ = 89812400. Its totient is φ = 89812398.

The previous prime is 89812379. The next prime is 89812409. The reversal of 89812399 is 99321898.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89812399 - 2⁵ = 89812367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89812339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44906199 + 44906200.

It is an arithmetic number, because the mean of its divisors is an integer number (44906200).

Almost surely, 2^89812399 is an apocalyptic number.

89812399 is a deficient number, since it is larger than the sum of its proper divisors (1).

89812399 is an equidigital number, since it uses as much as digits as its factorization.

89812399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 49.

The square root of 89812399 is about 9476.9403817899. The cubic root of 89812399 is about 447.8288817541.

The spelling of 89812399 in words is "eighty-nine million, eight hundred twelve thousand, three hundred ninety-nine".