5991227609 has 2 divisors, whose sum is σ = 5991227610. Its totient is φ = 5991227608.

The previous prime is 5991227551. The next prime is 5991227633. The reversal of 5991227609 is 9067221995.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5271486025 + 719741584 = 72605^2 + 26828^2 .

It is a cyclic number.

It is not a de Polignac number, because 5991227609 - 2²⁰ = 5990179033 is a prime.

It is not a weakly prime, because it can be changed into another prime (5991227639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2995613804 + 2995613805.

It is an arithmetic number, because the mean of its divisors is an integer number (2995613805).

Almost surely, 2^5991227609 is an apocalyptic number.

It is an amenable number.

5991227609 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991227609 is an equidigital number, since it uses as much as digits as its factorization.

5991227609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 5991227609 is about 77403.0206710307. The cubic root of 5991227609 is about 1816.2345779805.

The spelling of 5991227609 in words is "five billion, nine hundred ninety-one million, two hundred twenty-seven thousand, six hundred nine".