5287129898 has 8 divisors (see below), whose sum is σ = 7936909092. Its totient is φ = 2641493536.

The previous prime is 5287129891. The next prime is 5287129909. The reversal of 5287129898 is 8989217825.

It can be written as a sum of positive squares in 2 ways, for example, as 5172917929 + 114211969 = 71923^2 + 10687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5287129891) 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, 1032515 + ... + 1037622.

Almost surely, 2^5287129898 is an apocalyptic number.

5287129898 is a deficient number, since it is larger than the sum of its proper divisors (2649779194).

5287129898 is a wasteful number, since it uses less digits than its factorization.

5287129898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071416.

The product of its digits is 5806080, while the sum is 59.

The square root of 5287129898 is about 72712.6529429370. The cubic root of 5287129898 is about 1742.1009872370.

The spelling of 5287129898 in words is "five billion, two hundred eighty-seven million, one hundred twenty-nine thousand, eight hundred ninety-eight".