110720989 has 2 divisors, whose sum is σ = 110720990. Its totient is φ = 110720988.

The previous prime is 110720969. The next prime is 110721019. The reversal of 110720989 is 989027011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 8508889 = 10110^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 110720989 - 2¹⁷ = 110589917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110720969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55360494 + 55360495.

It is an arithmetic number, because the mean of its divisors is an integer number (55360495).

Almost surely, 2^110720989 is an apocalyptic number.

It is an amenable number.

110720989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110720989 is an equidigital number, since it uses as much as digits as its factorization.

110720989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 110720989 is about 10522.4041454413. The cubic root of 110720989 is about 480.1865435239.

The spelling of 110720989 in words is "one hundred ten million, seven hundred twenty thousand, nine hundred eighty-nine".