538872449 has 4 divisors (see below), whose sum is σ = 539104980. Its totient is φ = 538639920.

The previous prime is 538872407. The next prime is 538872487. The reversal of 538872449 is 944278835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944278835 = 5 ⋅188855767.

It can be written as a sum of positive squares in 2 ways, for example, as 393308224 + 145564225 = 19832^2 + 12065^2 .

It is a cyclic number.

It is not a de Polignac number, because 538872449 - 2²⁸ = 270436993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 538872397 and 538872406.

It is not an unprimeable number, because it can be changed into a prime (538892449) 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, 112754 + ... + 117435.

It is an arithmetic number, because the mean of its divisors is an integer number (134776245).

Almost surely, 2^538872449 is an apocalyptic number.

It is an amenable number.

538872449 is a deficient number, since it is larger than the sum of its proper divisors (232531).

538872449 is a wasteful number, since it uses less digits than its factorization.

538872449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232530.

The product of its digits is 1935360, while the sum is 50.

The square root of 538872449 is about 23213.6263647023. The cubic root of 538872449 is about 813.7581040452.

The spelling of 538872449 in words is "five hundred thirty-eight million, eight hundred seventy-two thousand, four hundred forty-nine".