89111279 has 2 divisors, whose sum is σ = 89111280. Its totient is φ = 89111278.

The previous prime is 89111261. The next prime is 89111317. The reversal of 89111279 is 97211198.

It is an a-pointer prime, because the next prime (89111317) can be obtained adding 89111279 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89111279 - 2²⁴ = 72334063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89111579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44555639 + 44555640.

It is an arithmetic number, because the mean of its divisors is an integer number (44555640).

Almost surely, 2^89111279 is an apocalyptic number.

89111279 is a deficient number, since it is larger than the sum of its proper divisors (1).

89111279 is an equidigital number, since it uses as much as digits as its factorization.

89111279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The square root of 89111279 is about 9439.8770648775. The cubic root of 89111279 is about 446.6605115981.

The spelling of 89111279 in words is "eighty-nine million, one hundred eleven thousand, two hundred seventy-nine".