5471639869 has 2 divisors, whose sum is σ = 5471639870. Its totient is φ = 5471639868.

The previous prime is 5471639861. The next prime is 5471639891. The reversal of 5471639869 is 9689361745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3589208100 + 1882431769 = 59910^2 + 43387^2 .

It is a cyclic number.

It is not a de Polignac number, because 5471639869 - 2³ = 5471639861 is a prime.

It is a super-2 number, since 2×5471639869² = 59877685712060674322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5471639861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2735819934 + 2735819935.

It is an arithmetic number, because the mean of its divisors is an integer number (2735819935).

Almost surely, 2^5471639869 is an apocalyptic number.

It is an amenable number.

5471639869 is a deficient number, since it is larger than the sum of its proper divisors (1).

5471639869 is an equidigital number, since it uses as much as digits as its factorization.

5471639869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 58.

The square root of 5471639869 is about 73970.5337888000. The cubic root of 5471639869 is about 1762.1349639134.

The spelling of 5471639869 in words is "five billion, four hundred seventy-one million, six hundred thirty-nine thousand, eight hundred sixty-nine".