5809491 has 6 divisors (see below), whose sum is σ = 8391500. Its totient is φ = 3872988.

The previous prime is 5809477. The next prime is 5809499. The reversal of 5809491 is 1949085.

It is not a de Polignac number, because 5809491 - 2¹⁷ = 5678419 is a prime.

It is a Duffinian number.

5809491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5809499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322741 + ... + 322758.

Almost surely, 2^5809491 is an apocalyptic number.

5809491 is a deficient number, since it is larger than the sum of its proper divisors (2582009).

5809491 is a wasteful number, since it uses less digits than its factorization.

5809491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645505 (or 645502 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 5809491 is about 2410.2885719349. The cubic root of 5809491 is about 179.7681273602.

It can be divided in two parts, 58094 and 91, that added together give a palindrome (58185).

The spelling of 5809491 in words is "five million, eight hundred nine thousand, four hundred ninety-one".