4636879309 has 2 divisors, whose sum is σ = 4636879310. Its totient is φ = 4636879308.

The previous prime is 4636879277. The next prime is 4636879337. The reversal of 4636879309 is 9039786364.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4004105284 + 632774025 = 63278^2 + 25155^2 .

It is a cyclic number.

It is not a de Polignac number, because 4636879309 - 2⁵ = 4636879277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4636879309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4636879399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2318439654 + 2318439655.

It is an arithmetic number, because the mean of its divisors is an integer number (2318439655).

Almost surely, 2^4636879309 is an apocalyptic number.

It is an amenable number.

4636879309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4636879309 is an equidigital number, since it uses as much as digits as its factorization.

4636879309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The square root of 4636879309 is about 68094.6349501927. The cubic root of 4636879309 is about 1667.5361744859.

The spelling of 4636879309 in words is "four billion, six hundred thirty-six million, eight hundred seventy-nine thousand, three hundred nine".