89999827 has 18 divisors (see below), whose sum is σ = 98009964. Its totient is φ = 82613520.

The previous prime is 89999803. The next prime is 89999831. The reversal of 89999827 is 72899998.

It is not a de Polignac number, because 89999827 - 2⁷ = 89999699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89999857) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1343248 + ... + 1343314.

It is an arithmetic number, because the mean of its divisors is an integer number (5444998).

Almost surely, 2^89999827 is an apocalyptic number.

89999827 is a deficient number, since it is larger than the sum of its proper divisors (8010137).

89999827 is an equidigital number, since it uses as much as digits as its factorization.

89999827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 147 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 61.

The square root of 89999827 is about 9486.8238626002. The cubic root of 89999827 is about 448.1401875137.

The spelling of 89999827 in words is "eighty-nine million, nine hundred ninety-nine thousand, eight hundred twenty-seven".