5491889 has 4 divisors (see below), whose sum is σ = 5914356. Its totient is φ = 5069424.

The previous prime is 5491883. The next prime is 5491907. The reversal of 5491889 is 9881945.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 2190400 = 1817^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 5491889 - 2¹⁶ = 5426353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5491883) 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, 211214 + ... + 211239.

It is an arithmetic number, because the mean of its divisors is an integer number (1478589).

Almost surely, 2^5491889 is an apocalyptic number.

It is an amenable number.

5491889 is a deficient number, since it is larger than the sum of its proper divisors (422467).

5491889 is a wasteful number, since it uses less digits than its factorization.

5491889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422466.

The product of its digits is 103680, while the sum is 44.

The square root of 5491889 is about 2343.4779708800. The cubic root of 5491889 is about 176.4306023936.

The spelling of 5491889 in words is "five million, four hundred ninety-one thousand, eight hundred eighty-nine".