5489981 has 4 divisors (see below), whose sum is σ = 6274272. Its totient is φ = 4705692.

The previous prime is 5489977. The next prime is 5489983. The reversal of 5489981 is 1899845.

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.

It is a cyclic number.

It is not a de Polignac number, because 5489981 - 2² = 5489977 is a prime.

It is a super-2 number, since 2×5489981² = 60279782760722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5489983) 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, 392135 + ... + 392148.

It is an arithmetic number, because the mean of its divisors is an integer number (1568568).

Almost surely, 2^5489981 is an apocalyptic number.

It is an amenable number.

5489981 is a deficient number, since it is larger than the sum of its proper divisors (784291).

5489981 is an equidigital number, since it uses as much as digits as its factorization.

5489981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784290.

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

The square root of 5489981 is about 2343.0708482673. The cubic root of 5489981 is about 176.4101681022.

The spelling of 5489981 in words is "five million, four hundred eighty-nine thousand, nine hundred eighty-one".