5649279869 has 2 divisors, whose sum is σ = 5649279870. Its totient is φ = 5649279868.

The previous prime is 5649279829. The next prime is 5649279893. The reversal of 5649279869 is 9689729465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5541015844 + 108264025 = 74438^2 + 10405^2 .

It is a cyclic number.

It is not a de Polignac number, because 5649279869 - 2⁸ = 5649279613 is a prime.

It is a super-2 number, since 2×5649279869² = 63828726076577314322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5649279829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824639934 + 2824639935.

It is an arithmetic number, because the mean of its divisors is an integer number (2824639935).

Almost surely, 2^5649279869 is an apocalyptic number.

It is an amenable number.

5649279869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649279869 is an equidigital number, since it uses as much as digits as its factorization.

5649279869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 65.

The square root of 5649279869 is about 75161.6914990609. The cubic root of 5649279869 is about 1781.0018209537.

The spelling of 5649279869 in words is "five billion, six hundred forty-nine million, two hundred seventy-nine thousand, eight hundred sixty-nine".