12739559 has 6 divisors (see below), whose sum is σ = 14819544. Its totient is φ = 10919580.

The previous prime is 12739537. The next prime is 12739577. The reversal of 12739559 is 95593721.

It is not a de Polignac number, because 12739559 - 2¹⁶ = 12674023 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 (12739589) 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 5 ways as a sum of consecutive naturals, for example, 129947 + ... + 130044.

It is an arithmetic number, because the mean of its divisors is an integer number (2469924).

Almost surely, 2^12739559 is an apocalyptic number.

12739559 is a deficient number, since it is larger than the sum of its proper divisors (2079985).

12739559 is an equidigital number, since it uses as much as digits as its factorization.

12739559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260005 (or 259998 counting only the distinct ones).

The product of its digits is 85050, while the sum is 41.

The square root of 12739559 is about 3569.2518823978. The cubic root of 12739559 is about 233.5526493502.

The spelling of 12739559 in words is "twelve million, seven hundred thirty-nine thousand, five hundred fifty-nine".