4684991809 has 3 divisors (see below), whose sum is σ = 4685060257. Its totient is φ = 4684923362.

The previous prime is 4684991783. The next prime is 4684991821. The reversal of 4684991809 is 9081994864.

It is a happy number.

The square root of 4684991809 is 68447.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4684991809 - 2⁷ = 4684991681 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4684991849) 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 2 ways as a sum of consecutive naturals, for example, 34224 + ... + 102670.

Almost surely, 2^4684991809 is an apocalyptic number.

4684991809 is the 68447-th square number.

4684991809 is the 34224-th centered octagonal number.

It is an amenable number.

4684991809 is a deficient number, since it is larger than the sum of its proper divisors (68448).

4684991809 is an frugal number, since it uses more digits than its factorization.

4684991809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136894 (or 68447 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 58.

The cubic root of 4684991809 is about 1673.2838213800.

The spelling of 4684991809 in words is "four billion, six hundred eighty-four million, nine hundred ninety-one thousand, eight hundred nine".