979801289 has 2 divisors, whose sum is σ = 979801290. Its totient is φ = 979801288.

The previous prime is 979801271. The next prime is 979801343. The reversal of 979801289 is 982108979.

979801289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964723600 + 15077689 = 31060^2 + 3883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979801289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 979801289.

It is not a weakly prime, because it can be changed into another prime (979809289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489900644 + 489900645.

It is an arithmetic number, because the mean of its divisors is an integer number (489900645).

Almost surely, 2^979801289 is an apocalyptic number.

It is an amenable number.

979801289 is a deficient number, since it is larger than the sum of its proper divisors (1).

979801289 is an equidigital number, since it uses as much as digits as its factorization.

979801289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 53.

The square root of 979801289 is about 31301.7777290684. Note that the first 4 decimals coincide. The cubic root of 979801289 is about 993.2212486953.

The spelling of 979801289 in words is "nine hundred seventy-nine million, eight hundred one thousand, two hundred eighty-nine".