89705519 has 2 divisors, whose sum is σ = 89705520. Its totient is φ = 89705518.

The previous prime is 89705509. The next prime is 89705533. The reversal of 89705519 is 91550798.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89705519 is a prime.

It is a super-2 number, since 2×89705519² = 16094160278118722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89705519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89705509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44852759 + 44852760.

It is an arithmetic number, because the mean of its divisors is an integer number (44852760).

Almost surely, 2^89705519 is an apocalyptic number.

89705519 is a deficient number, since it is larger than the sum of its proper divisors (1).

89705519 is an equidigital number, since it uses as much as digits as its factorization.

89705519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 89705519 is about 9471.2997524099. The cubic root of 89705519 is about 447.6511670563.

The spelling of 89705519 in words is "eighty-nine million, seven hundred five thousand, five hundred nineteen".