89719799 has 4 divisors (see below), whose sum is σ = 96621336. Its totient is φ = 82818264.

The previous prime is 89719787. The next prime is 89719807. The reversal of 89719799 is 99791798.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99791798 = 2 ⋅49895899.

It is a cyclic number.

It is not a de Polignac number, because 89719799 - 2²⁰ = 88671223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89719739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3450749 + ... + 3450774.

It is an arithmetic number, because the mean of its divisors is an integer number (24155334).

Almost surely, 2^89719799 is an apocalyptic number.

89719799 is a deficient number, since it is larger than the sum of its proper divisors (6901537).

89719799 is a wasteful number, since it uses less digits than its factorization.

89719799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901536.

The product of its digits is 2571912, while the sum is 59.

The square root of 89719799 is about 9472.0535788181. The cubic root of 89719799 is about 447.6749192905.

The spelling of 89719799 in words is "eighty-nine million, seven hundred nineteen thousand, seven hundred ninety-nine".