112891993 has 4 divisors (see below), whose sum is σ = 112914340. Its totient is φ = 112869648.

The previous prime is 112891969. The next prime is 112891997. The reversal of 112891993 is 399198211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 76265289 = 6052^2 + 8733^2 .

It is a cyclic number.

It is not a de Polignac number, because 112891993 - 2⁹ = 112891481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112891997) 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, 403 + ... + 15031.

It is an arithmetic number, because the mean of its divisors is an integer number (28228585).

It is a 5052-hyperperfect number.

Almost surely, 2^112891993 is an apocalyptic number.

It is an amenable number.

112891993 is a deficient number, since it is larger than the sum of its proper divisors (22347).

112891993 is an equidigital number, since it uses as much as digits as its factorization.

112891993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22346.

The product of its digits is 34992, while the sum is 43.

The square root of 112891993 is about 10625.0643762756. The cubic root of 112891993 is about 483.3047313501.

The spelling of 112891993 in words is "one hundred twelve million, eight hundred ninety-one thousand, nine hundred ninety-three".