89243279 has 2 divisors, whose sum is σ = 89243280. Its totient is φ = 89243278.

The previous prime is 89243269. The next prime is 89243293. The reversal of 89243279 is 97234298.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89243279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89243239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44621639 + 44621640.

It is an arithmetic number, because the mean of its divisors is an integer number (44621640).

Almost surely, 2^89243279 is an apocalyptic number.

89243279 is a deficient number, since it is larger than the sum of its proper divisors (1).

89243279 is an equidigital number, since it uses as much as digits as its factorization.

89243279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 89243279 is about 9446.8660941076. The cubic root of 89243279 is about 446.8809479639.

The spelling of 89243279 in words is "eighty-nine million, two hundred forty-three thousand, two hundred seventy-nine".