12873739 has 4 divisors (see below), whose sum is σ = 12883600. Its totient is φ = 12863880.

The previous prime is 12873733. The next prime is 12873781. The reversal of 12873739 is 93737821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93737821 = 71 ⋅1320251.

It is a cyclic number.

It is not a de Polignac number, because 12873739 - 2⁷ = 12873611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12873733) 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, 2607 + ... + 5704.

It is an arithmetic number, because the mean of its divisors is an integer number (3220900).

Almost surely, 2^12873739 is an apocalyptic number.

12873739 is a deficient number, since it is larger than the sum of its proper divisors (9861).

12873739 is an equidigital number, since it uses as much as digits as its factorization.

12873739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860.

The product of its digits is 63504, while the sum is 40.

The square root of 12873739 is about 3587.9993032329. Note that the first 3 decimals coincide. The cubic root of 12873739 is about 234.3697553552.

The spelling of 12873739 in words is "twelve million, eight hundred seventy-three thousand, seven hundred thirty-nine".