112689991 has 8 divisors (see below), whose sum is σ = 123168384. Its totient is φ = 102639360.

The previous prime is 112689989. The next prime is 112690001. The reversal of 112689991 is 199986211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112689991 - 2¹ = 112689989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112689961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106390 + ... + 107443.

It is an arithmetic number, because the mean of its divisors is an integer number (15396048).

Almost surely, 2^112689991 is an apocalyptic number.

112689991 is a deficient number, since it is larger than the sum of its proper divisors (10478393).

112689991 is a wasteful number, since it uses less digits than its factorization.

112689991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213881.

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

The square root of 112689991 is about 10615.5542012652. The cubic root of 112689991 is about 483.0162939748.

The spelling of 112689991 in words is "one hundred twelve million, six hundred eighty-nine thousand, nine hundred ninety-one".