5491839 has 4 divisors (see below), whose sum is σ = 7322456. Its totient is φ = 3661224.

The previous prime is 5491819. The next prime is 5491841. The reversal of 5491839 is 9381945.

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

It is not a de Polignac number, because 5491839 - 2¹⁵ = 5459071 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 5491797 and 5491806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491819) 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, 915304 + ... + 915309.

It is an arithmetic number, because the mean of its divisors is an integer number (1830614).

Almost surely, 2^5491839 is an apocalyptic number.

5491839 is a deficient number, since it is larger than the sum of its proper divisors (1830617).

5491839 is a wasteful number, since it uses less digits than its factorization.

5491839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830616.

The product of its digits is 38880, while the sum is 39.

The square root of 5491839 is about 2343.4673029509. The cubic root of 5491839 is about 176.4300669642.

The spelling of 5491839 in words is "five million, four hundred ninety-one thousand, eight hundred thirty-nine".