112001989 has 4 divisors (see below), whose sum is σ = 122184000. Its totient is φ = 101819980.

The previous prime is 112001963. The next prime is 112002029. The reversal of 112001989 is 989100211.

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.

It is a cyclic number.

It is not a de Polignac number, because 112001989 - 2²⁵ = 78447557 is a prime.

It is a super-2 number, since 2×112001989² = 25088891079912242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112001989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112001909) 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, 5090989 + ... + 5091010.

It is an arithmetic number, because the mean of its divisors is an integer number (30546000).

Almost surely, 2^112001989 is an apocalyptic number.

It is an amenable number.

112001989 is a deficient number, since it is larger than the sum of its proper divisors (10182011).

112001989 is a wasteful number, since it uses less digits than its factorization.

112001989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10182010.

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 112001989 is about 10583.0992152583. The cubic root of 112001989 is about 482.0313062544.

The spelling of 112001989 in words is "one hundred twelve million, one thousand, nine hundred eighty-nine".