4688991289 has 4 divisors (see below), whose sum is σ = 4964814324. Its totient is φ = 4413168256.

The previous prime is 4688991277. The next prime is 4688991299. The reversal of 4688991289 is 9821998864.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2499500025 + 2189491264 = 49995^2 + 46792^2 .

It is a cyclic number.

It is not a de Polignac number, because 4688991289 - 2²¹ = 4686894137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4688991289.

It is not an unprimeable number, because it can be changed into a prime (4688991239) 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 in 3 ways as a sum of consecutive naturals, for example, 137911492 + ... + 137911525.

It is an arithmetic number, because the mean of its divisors is an integer number (1241203581).

Almost surely, 2^4688991289 is an apocalyptic number.

It is an amenable number.

4688991289 is a deficient number, since it is larger than the sum of its proper divisors (275823035).

4688991289 is a wasteful number, since it uses less digits than its factorization.

4688991289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275823034.

The product of its digits is 17915904, while the sum is 64.

The square root of 4688991289 is about 68476.2096570773. The cubic root of 4688991289 is about 1673.7598351422.

The spelling of 4688991289 in words is "four billion, six hundred eighty-eight million, nine hundred ninety-one thousand, two hundred eighty-nine".