4491423 has 8 divisors (see below), whose sum is σ = 6654000. Its totient is φ = 2994264.

The previous prime is 4491419. The next prime is 4491439. The reversal of 4491423 is 3241944.

It is not a de Polignac number, because 4491423 - 2² = 4491419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 166349 = 4491423 / (4 + 4 + 9 + 1 + 4 + 2 + 3).

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 (4491413) 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, 83148 + ... + 83201.

It is an arithmetic number, because the mean of its divisors is an integer number (831750).

Almost surely, 2^4491423 is an apocalyptic number.

4491423 is a deficient number, since it is larger than the sum of its proper divisors (2162577).

4491423 is a wasteful number, since it uses less digits than its factorization.

4491423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166358 (or 166352 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 4491423 is about 2119.2977610520. The cubic root of 4491423 is about 164.9914045109.

The spelling of 4491423 in words is "four million, four hundred ninety-one thousand, four hundred twenty-three".