4491323 has 2 divisors, whose sum is σ = 4491324. Its totient is φ = 4491322.

The previous prime is 4491313. The next prime is 4491329. The reversal of 4491323 is 3231944.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4491323 - 2¹⁶ = 4425787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4491292 and 4491301.

It is not a weakly prime, because it can be changed into another prime (4491329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245661 + 2245662.

It is an arithmetic number, because the mean of its divisors is an integer number (2245662).

Almost surely, 2^4491323 is an apocalyptic number.

4491323 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491323 is an equidigital number, since it uses as much as digits as its factorization.

4491323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 4491323 is about 2119.2741682000. The cubic root of 4491323 is about 164.9901800094.

The spelling of 4491323 in words is "four million, four hundred ninety-one thousand, three hundred twenty-three".