5509398169 has 4 divisors (see below), whose sum is σ = 6010252560. Its totient is φ = 5008543780.

The previous prime is 5509398157. The next prime is 5509398203. The reversal of 5509398169 is 9618939055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5509398169 - 2¹⁷ = 5509267097 is a prime.

It is a super-2 number, since 2×5509398169² = 60706936369161105122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5509399169) 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, 250427179 + ... + 250427200.

It is an arithmetic number, because the mean of its divisors is an integer number (1502563140).

Almost surely, 2^5509398169 is an apocalyptic number.

It is an amenable number.

5509398169 is a deficient number, since it is larger than the sum of its proper divisors (500854391).

5509398169 is a wasteful number, since it uses less digits than its factorization.

5509398169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500854390.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The square root of 5509398169 is about 74225.3202687600. The cubic root of 5509398169 is about 1766.1790140272.

The spelling of 5509398169 in words is "five billion, five hundred nine million, three hundred ninety-eight thousand, one hundred sixty-nine".