4491406 has 8 divisors (see below), whose sum is σ = 6748560. Its totient is φ = 2241888.

The previous prime is 4491401. The next prime is 4491407. The reversal of 4491406 is 6041944.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491401) 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, 91 + ... + 2998.

It is an arithmetic number, because the mean of its divisors is an integer number (843570).

Almost surely, 2^4491406 is an apocalyptic number.

4491406 is a deficient number, since it is larger than the sum of its proper divisors (2257154).

4491406 is a wasteful number, since it uses less digits than its factorization.

4491406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4491406 is about 2119.2937502857. The cubic root of 4491406 is about 164.9911963469.

The spelling of 4491406 in words is "four million, four hundred ninety-one thousand, four hundred six".