13449823 has 4 divisors (see below), whose sum is σ = 13913640. Its totient is φ = 12986008.

The previous prime is 13449809. The next prime is 13449827. The reversal of 13449823 is 32894431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32894431 = 401 ⋅82031.

It is a cyclic number.

It is not a de Polignac number, because 13449823 - 2⁹ = 13449311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13449827) 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, 231865 + ... + 231922.

It is an arithmetic number, because the mean of its divisors is an integer number (3478410).

Almost surely, 2^13449823 is an apocalyptic number.

13449823 is a deficient number, since it is larger than the sum of its proper divisors (463817).

13449823 is an equidigital number, since it uses as much as digits as its factorization.

13449823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463816.

The product of its digits is 20736, while the sum is 34.

The square root of 13449823 is about 3667.4000327207. The cubic root of 13449823 is about 237.8147877598.

The spelling of 13449823 in words is "thirteen million, four hundred forty-nine thousand, eight hundred twenty-three".