112891969 has 2 divisors, whose sum is σ = 112891970. Its totient is φ = 112891968.

The previous prime is 112891913. The next prime is 112891997. The reversal of 112891969 is 969198211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105842944 + 7049025 = 10288^2 + 2655^2 .

It is a cyclic number.

It is not a de Polignac number, because 112891969 - 2¹⁹ = 112367681 is a prime.

It is a super-2 number, since 2×112891969² = 25489193329393922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (112391969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56445984 + 56445985.

It is an arithmetic number, because the mean of its divisors is an integer number (56445985).

Almost surely, 2^112891969 is an apocalyptic number.

It is an amenable number.

112891969 is a deficient number, since it is larger than the sum of its proper divisors (1).

112891969 is an equidigital number, since it uses as much as digits as its factorization.

112891969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 46.

The square root of 112891969 is about 10625.0632468706. The cubic root of 112891969 is about 483.3046971011.

The spelling of 112891969 in words is "one hundred twelve million, eight hundred ninety-one thousand, nine hundred sixty-nine".