30989999959 has 2 divisors, whose sum is σ = 30989999960. Its totient is φ = 30989999958.

The previous prime is 30989999921. The next prime is 30990000031. The reversal of 30989999959 is 95999998903.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30989999959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30989990959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15494999979 + 15494999980.

It is an arithmetic number, because the mean of its divisors is an integer number (15494999980).

Almost surely, 2^30989999959 is an apocalyptic number.

30989999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

30989999959 is an equidigital number, since it uses as much as digits as its factorization.

30989999959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 573956280, while the sum is 79.

It can be divided in two parts, 30 and 989999959, that added together give a palindrome (989999989).

The spelling of 30989999959 in words is "thirty billion, nine hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred fifty-nine".