4991447 has 8 divisors (see below), whose sum is σ = 5184192. Its totient is φ = 4802400.

The previous prime is 4991431. The next prime is 4991449. The reversal of 4991447 is 7441994.

4991447 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4991447 - 2⁴ = 4991431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4991447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 3737.

It is an arithmetic number, because the mean of its divisors is an integer number (648024).

Almost surely, 2^4991447 is an apocalyptic number.

4991447 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4991447 is a deficient number, since it is larger than the sum of its proper divisors (192745).

4991447 is a wasteful number, since it uses less digits than its factorization.

4991447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 36288, while the sum is 38.

The square root of 4991447 is about 2234.1546499739. The cubic root of 4991447 is about 170.9000361902.

The spelling of 4991447 in words is "four million, nine hundred ninety-one thousand, four hundred forty-seven".