5439987131 has 4 divisors (see below), whose sum is σ = 5759986392. Its totient is φ = 5119987872.

The previous prime is 5439987073. The next prime is 5439987143. The reversal of 5439987131 is 1317899345.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5439987131 - 2⁶ = 5439987067 is a prime.

It is a super-2 number, since 2×5439987131² = 59186919970891222322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5439987131.

It is not an unprimeable number, because it can be changed into a prime (5439987731) 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, 159999605 + ... + 159999638.

It is an arithmetic number, because the mean of its divisors is an integer number (1439996598).

Almost surely, 2^5439987131 is an apocalyptic number.

5439987131 is a deficient number, since it is larger than the sum of its proper divisors (319999261).

5439987131 is a wasteful number, since it uses less digits than its factorization.

5439987131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319999260.

The product of its digits is 816480, while the sum is 50.

The square root of 5439987131 is about 73756.2684183521. The cubic root of 5439987131 is about 1758.7304820288.

The spelling of 5439987131 in words is "five billion, four hundred thirty-nine million, nine hundred eighty-seven thousand, one hundred thirty-one".