5805139 has 4 divisors (see below), whose sum is σ = 5819040. Its totient is φ = 5791240.

The previous prime is 5805119. The next prime is 5805161. The reversal of 5805139 is 9315085.

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 5805139 - 2⁷ = 5805011 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

5805139 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5805139.

It is not an unprimeable number, because it can be changed into a prime (5805119) 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, 6304 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (1454760).

Almost surely, 2^5805139 is an apocalyptic number.

5805139 is a deficient number, since it is larger than the sum of its proper divisors (13901).

5805139 is a wasteful number, since it uses less digits than its factorization.

5805139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13900.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 5805139 is about 2409.3856063320. The cubic root of 5805139 is about 179.7232269074.

The spelling of 5805139 in words is "five million, eight hundred five thousand, one hundred thirty-nine".