112989561 has 8 divisors (see below), whose sum is σ = 158581920. Its totient is φ = 71361792.

The previous prime is 112989559. The next prime is 112989581. The reversal of 112989561 is 165989211.

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

It is not a de Polignac number, because 112989561 - 2¹ = 112989559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (112989511) 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, 991080 + ... + 991193.

It is an arithmetic number, because the mean of its divisors is an integer number (19822740).

Almost surely, 2^112989561 is an apocalyptic number.

It is an amenable number.

112989561 is a deficient number, since it is larger than the sum of its proper divisors (45592359).

112989561 is a wasteful number, since it uses less digits than its factorization.

112989561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982295.

The product of its digits is 38880, while the sum is 42.

The square root of 112989561 is about 10629.6547921369. The cubic root of 112989561 is about 483.4439248588.

The spelling of 112989561 in words is "one hundred twelve million, nine hundred eighty-nine thousand, five hundred sixty-one".