111792689 has 4 divisors (see below), whose sum is σ = 112818420. Its totient is φ = 110766960.

The previous prime is 111792679. The next prime is 111792749. The reversal of 111792689 is 986297111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986297111 = 223 ⋅4422857.

It can be written as a sum of positive squares in 2 ways, for example, as 29073664 + 82719025 = 5392^2 + 9095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111792689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111792619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512702 + ... + 512919.

It is an arithmetic number, because the mean of its divisors is an integer number (28204605).

Almost surely, 2^111792689 is an apocalyptic number.

It is an amenable number.

111792689 is a deficient number, since it is larger than the sum of its proper divisors (1025731).

111792689 is a wasteful number, since it uses less digits than its factorization.

111792689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025730.

The product of its digits is 54432, while the sum is 44.

The square root of 111792689 is about 10573.2061835566. The cubic root of 111792689 is about 481.7308590242.

The spelling of 111792689 in words is "one hundred eleven million, seven hundred ninety-two thousand, six hundred eighty-nine".