12397056949 has 8 divisors (see below), whose sum is σ = 12482360280. Its totient is φ = 12312028416.

The previous prime is 12397056913. The next prime is 12397057019. The reversal of 12397056949 is 94965079321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1002988900 + 11394068049 = 31670^2 + 106743^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12397056949 - 2¹⁹ = 12396532661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12397056949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12397051949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22249 + ... + 159025.

It is an arithmetic number, because the mean of its divisors is an integer number (1560295035).

Almost surely, 2^12397056949 is an apocalyptic number.

It is an amenable number.

12397056949 is a deficient number, since it is larger than the sum of its proper divisors (85303331).

12397056949 is a wasteful number, since it uses less digits than its factorization.

12397056949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137399.

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 12397056949 in words is "twelve billion, three hundred ninety-seven million, fifty-six thousand, nine hundred forty-nine".