12759649 has 12 divisors (see below), whose sum is σ = 14985300. Its totient is φ = 10831968.

The previous prime is 12759647. The next prime is 12759653. The reversal of 12759649 is 94695721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5832225 + 6927424 = 2415^2 + 2632^2 .

It is not a de Polignac number, because 12759649 - 2¹ = 12759647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12759647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4147 + ... + 6535.

It is an arithmetic number, because the mean of its divisors is an integer number (1248775).

Almost surely, 2^12759649 is an apocalyptic number.

It is an amenable number.

12759649 is a deficient number, since it is larger than the sum of its proper divisors (2225651).

12759649 is a wasteful number, since it uses less digits than its factorization.

12759649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 2505 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 12759649 is about 3572.0650889926. The cubic root of 12759649 is about 233.6753539758.

The spelling of 12759649 in words is "twelve million, seven hundred fifty-nine thousand, six hundred forty-nine".