112172869 has 2 divisors, whose sum is σ = 112172870. Its totient is φ = 112172868.

The previous prime is 112172867. The next prime is 112172891. The reversal of 112172869 is 968271211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 35820225 = 8738^2 + 5985^2 .

It is a cyclic number.

It is not a de Polignac number, because 112172869 - 2¹ = 112172867 is a prime.

It is a super-2 number, since 2×112172869² = 25165505079382322, which contains 22 as substring.

Together with 112172867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112172867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56086434 + 56086435.

It is an arithmetic number, because the mean of its divisors is an integer number (56086435).

Almost surely, 2^112172869 is an apocalyptic number.

It is an amenable number.

112172869 is a deficient number, since it is larger than the sum of its proper divisors (1).

112172869 is an equidigital number, since it uses as much as digits as its factorization.

112172869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 112172869 is about 10591.1693877494. The cubic root of 112172869 is about 482.2763246861.

The spelling of 112172869 in words is "one hundred twelve million, one hundred seventy-two thousand, eight hundred sixty-nine".