110559989 has 2 divisors, whose sum is σ = 110559990. Its totient is φ = 110559988.

The previous prime is 110559971. The next prime is 110560019. The reversal of 110559989 is 989955011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60575089 + 49984900 = 7783^2 + 7070^2 .

It is an emirp because it is prime and its reverse (989955011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110559989 is a prime.

It is a super-2 number, since 2×110559989² = 24447022335360242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110559929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55279994 + 55279995.

It is an arithmetic number, because the mean of its divisors is an integer number (55279995).

Almost surely, 2^110559989 is an apocalyptic number.

It is an amenable number.

110559989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110559989 is an equidigital number, since it uses as much as digits as its factorization.

110559989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 47.

The square root of 110559989 is about 10514.7510194013. The cubic root of 110559989 is about 479.9536833203.

The spelling of 110559989 in words is "one hundred ten million, five hundred fifty-nine thousand, nine hundred eighty-nine".