5491988 has 24 divisors (see below), whose sum is σ = 10214400. Its totient is φ = 2576448.

The previous prime is 5491979. The next prime is 5491999. The reversal of 5491988 is 8891945.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9368 + ... + 9936.

It is an arithmetic number, because the mean of its divisors is an integer number (425600).

Almost surely, 2^5491988 is an apocalyptic number.

It is an amenable number.

5491988 is a deficient number, since it is larger than the sum of its proper divisors (4722412).

5491988 is a wasteful number, since it uses less digits than its factorization.

5491988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

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

The square root of 5491988 is about 2343.4990932364. The cubic root of 5491988 is about 176.4316625343.

The spelling of 5491988 in words is "five million, four hundred ninety-one thousand, nine hundred eighty-eight".