112020989 has 4 divisors (see below), whose sum is σ = 112313856. Its totient is φ = 111728124.

The previous prime is 112020983. The next prime is 112021001. The reversal of 112020989 is 989020211.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-112020989 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 (112020983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145859 + ... + 146624.

It is an arithmetic number, because the mean of its divisors is an integer number (28078464).

Almost surely, 2^112020989 is an apocalyptic number.

It is an amenable number.

112020989 is a deficient number, since it is larger than the sum of its proper divisors (292867).

112020989 is an equidigital number, since it uses as much as digits as its factorization.

112020989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292866.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 112020989 is about 10583.9968348446. The cubic root of 112020989 is about 482.0585619519.

The spelling of 112020989 in words is "one hundred twelve million, twenty thousand, nine hundred eighty-nine".