112565989 has 4 divisors (see below), whose sum is σ = 112705600. Its totient is φ = 112426380.

The previous prime is 112565977. The next prime is 112566019. The reversal of 112565989 is 989565211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989565211 = 107 ⋅9248273.

It is a cyclic number.

It is not a de Polignac number, because 112565989 - 2¹⁹ = 112041701 is a prime.

It is a super-2 number, since 2×112565989² = 25342203759096242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112565939) 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 in 3 ways as a sum of consecutive naturals, for example, 68589 + ... + 70210.

It is an arithmetic number, because the mean of its divisors is an integer number (28176400).

Almost surely, 2^112565989 is an apocalyptic number.

It is an amenable number.

112565989 is a deficient number, since it is larger than the sum of its proper divisors (139611).

112565989 is an equidigital number, since it uses as much as digits as its factorization.

112565989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139610.

The product of its digits is 194400, while the sum is 46.

The square root of 112565989 is about 10609.7120130567. The cubic root of 112565989 is about 482.8390615265.

The spelling of 112565989 in words is "one hundred twelve million, five hundred sixty-five thousand, nine hundred eighty-nine".