12949723 has 4 divisors (see below), whose sum is σ = 13367488. Its totient is φ = 12531960.

The previous prime is 12949691. The next prime is 12949787. The reversal of 12949723 is 32794921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32794921 = 17 ⋅1929113.

It is a cyclic number.

It is not a de Polignac number, because 12949723 - 2⁵ = 12949691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12949523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208836 + ... + 208897.

It is an arithmetic number, because the mean of its divisors is an integer number (3341872).

Almost surely, 2^12949723 is an apocalyptic number.

12949723 is a deficient number, since it is larger than the sum of its proper divisors (417765).

12949723 is an equidigital number, since it uses as much as digits as its factorization.

12949723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417764.

The product of its digits is 27216, while the sum is 37.

The square root of 12949723 is about 3598.5723558100. The cubic root of 12949723 is about 234.8299539422.

The spelling of 12949723 in words is "twelve million, nine hundred forty-nine thousand, seven hundred twenty-three".