89417879 has 2 divisors, whose sum is σ = 89417880. Its totient is φ = 89417878.

The previous prime is 89417873. The next prime is 89417893. The reversal of 89417879 is 97871498.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89417879 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89417879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89417873) 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, 44708939 + 44708940.

It is an arithmetic number, because the mean of its divisors is an integer number (44708940).

Almost surely, 2^89417879 is an apocalyptic number.

89417879 is a deficient number, since it is larger than the sum of its proper divisors (1).

89417879 is an equidigital number, since it uses as much as digits as its factorization.

89417879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 53.

The square root of 89417879 is about 9456.1027384436. The cubic root of 89417879 is about 447.1721915002.

The spelling of 89417879 in words is "eighty-nine million, four hundred seventeen thousand, eight hundred seventy-nine".