89135819 has 4 divisors (see below), whose sum is σ = 92011200. Its totient is φ = 86260440.

The previous prime is 89135807. The next prime is 89135857. The reversal of 89135819 is 91853198.

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: 91853198 = 2 ⋅45926599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89135819 is a prime.

It is a super-2 number, since 2×89135819² = 15890388457601522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89135819.

It is not an unprimeable number, because it can be changed into a prime (89135119) 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, 1437644 + ... + 1437705.

It is an arithmetic number, because the mean of its divisors is an integer number (23002800).

Almost surely, 2^89135819 is an apocalyptic number.

89135819 is a deficient number, since it is larger than the sum of its proper divisors (2875381).

89135819 is a wasteful number, since it uses less digits than its factorization.

89135819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875380.

The product of its digits is 77760, while the sum is 44.

The square root of 89135819 is about 9441.1767804655. The cubic root of 89135819 is about 446.7015091877.

The spelling of 89135819 in words is "eighty-nine million, one hundred thirty-five thousand, eight hundred nineteen".