1109999959 has 2 divisors, whose sum is σ = 1109999960. Its totient is φ = 1109999958.

The previous prime is 1109999953. The next prime is 1109999971. The reversal of 1109999959 is 9599999011.

It is a weak prime.

It is an emirp because it is prime and its reverse (9599999011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1109999959 - 2³ = 1109999951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1109999897 and 1109999906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109999951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554999979 + 554999980.

It is an arithmetic number, because the mean of its divisors is an integer number (554999980).

Almost surely, 2^1109999959 is an apocalyptic number.

1109999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109999959 is an equidigital number, since it uses as much as digits as its factorization.

1109999959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2657205, while the sum is 61.

The square root of 1109999959 is about 33316.6618826076. The cubic root of 1109999959 is about 1035.3987927003.

The spelling of 1109999959 in words is "one billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred fifty-nine".