110399999989 has 2 divisors, whose sum is σ = 110399999990. Its totient is φ = 110399999988.

The previous prime is 110399999987. The next prime is 110400000041. The reversal of 110399999989 is 989999993011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101057231025 + 9342768964 = 317895^2 + 96658^2 .

It is a cyclic number.

It is not a de Polignac number, because 110399999989 - 2¹ = 110399999987 is a prime.

Together with 110399999987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110399999987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55199999994 + 55199999995.

It is an arithmetic number, because the mean of its divisors is an integer number (55199999995).

Almost surely, 2^110399999989 is an apocalyptic number.

It is an amenable number.

110399999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110399999989 is an equidigital number, since it uses as much as digits as its factorization.

110399999989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114791256, while the sum is 76.

The spelling of 110399999989 in words is "one hundred ten billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-nine".