900112891 has 4 divisors (see below), whose sum is σ = 900218800. Its totient is φ = 900006984.

The previous prime is 900112883. The next prime is 900112901. The reversal of 900112891 is 198211009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198211009 = 3067 ⋅64627.

It is a cyclic number.

It is not a de Polignac number, because 900112891 - 2³ = 900112883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900112841) 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, 38976 + ... + 57613.

It is an arithmetic number, because the mean of its divisors is an integer number (225054700).

Almost surely, 2^900112891 is an apocalyptic number.

900112891 is a deficient number, since it is larger than the sum of its proper divisors (105909).

900112891 is an equidigital number, since it uses as much as digits as its factorization.

900112891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105908.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 900112891 is about 30001.8814576686. The cubic root of 900112891 is about 965.5297514594.

The spelling of 900112891 in words is "nine hundred million, one hundred twelve thousand, eight hundred ninety-one".