5491944 has 48 divisors (see below), whose sum is σ = 15069600. Its totient is φ = 1806624.

The previous prime is 5491943. The next prime is 5491951. The reversal of 5491944 is 4491945.

It is a happy number.

It is a super-2 number, since 2×5491944² = 60322897798272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5491899 and 5491908.

It is not an unprimeable number, because it can be changed into a prime (5491943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5517 + ... + 6435.

It is an arithmetic number, because the mean of its divisors is an integer number (313950).

Almost surely, 2^5491944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5491944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7534800).

5491944 is an abundant number, since it is smaller than the sum of its proper divisors (9577656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5491944 is a wasteful number, since it uses less digits than its factorization.

5491944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1007 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 5491944 is about 2343.4897055460. The cubic root of 5491944 is about 176.4311913622.

Subtracting from 5491944 its reverse (4491945), we obtain a palindrome (999999).

The spelling of 5491944 in words is "five million, four hundred ninety-one thousand, nine hundred forty-four".