34987679989 has 2 divisors, whose sum is σ = 34987679990. Its totient is φ = 34987679988.

The previous prime is 34987679983. The next prime is 34987680019. The reversal of 34987679989 is 98997678943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23664591889 + 11323088100 = 153833^2 + 106410^2 .

It is a cyclic number.

It is not a de Polignac number, because 34987679989 - 2²⁷ = 34853462261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34987679983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17493839994 + 17493839995.

It is an arithmetic number, because the mean of its divisors is an integer number (17493839995).

Almost surely, 2^34987679989 is an apocalyptic number.

It is an amenable number.

34987679989 is a deficient number, since it is larger than the sum of its proper divisors (1).

34987679989 is an equidigital number, since it uses as much as digits as its factorization.

34987679989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481421312, while the sum is 79.

The spelling of 34987679989 in words is "thirty-four billion, nine hundred eighty-seven million, six hundred seventy-nine thousand, nine hundred eighty-nine".