5639269309 has 4 divisors (see below), whose sum is σ = 5697406204. Its totient is φ = 5581132416.

The previous prime is 5639269243. The next prime is 5639269373. The reversal of 5639269309 is 9039629365.

It is a happy number.

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 4208765625 + 1430503684 = 64875^2 + 37822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5639269309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639269399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29068302 + ... + 29068495.

It is an arithmetic number, because the mean of its divisors is an integer number (1424351551).

Almost surely, 2^5639269309 is an apocalyptic number.

It is an amenable number.

5639269309 is a deficient number, since it is larger than the sum of its proper divisors (58136895).

5639269309 is an equidigital number, since it uses as much as digits as its factorization.

5639269309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58136894.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The square root of 5639269309 is about 75095.0684732360. The cubic root of 5639269309 is about 1779.9492167686.

The spelling of 5639269309 in words is "five billion, six hundred thirty-nine million, two hundred sixty-nine thousand, three hundred nine".