5439587861 has 4 divisors (see below), whose sum is σ = 5469976800. Its totient is φ = 5409198924.

The previous prime is 5439587833. The next prime is 5439587917. The reversal of 5439587861 is 1687859345.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1687859345 = 5 ⋅337571869.

It is a cyclic number.

It is not a de Polignac number, because 5439587861 - 2²⁶ = 5372478997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5439587797 and 5439587806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5439587821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15194201 + ... + 15194558.

It is an arithmetic number, because the mean of its divisors is an integer number (1367494200).

Almost surely, 2^5439587861 is an apocalyptic number.

It is an amenable number.

5439587861 is a deficient number, since it is larger than the sum of its proper divisors (30388939).

5439587861 is a wasteful number, since it uses less digits than its factorization.

5439587861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30388938.

The product of its digits is 7257600, while the sum is 56.

The square root of 5439587861 is about 73753.5616834875. The cubic root of 5439587861 is about 1758.6874534038.

The spelling of 5439587861 in words is "five billion, four hundred thirty-nine million, five hundred eighty-seven thousand, eight hundred sixty-one".