12838476249 has 27 divisors (see below), whose sum is σ = 18737445909. Its totient is φ = 8470831320.

The previous prime is 12838476229. The next prime is 12838476257. The reversal of 12838476249 is 94267483821.

The square root of 12838476249 is 113307.

It is a perfect power (a square), and thus also a powerful number.

12838476249 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 8 + 4 + 7 + 624 + 9 = 666.

It is not a de Polignac number, because 12838476249 - 2⁹ = 12838475737 is a prime.

It is a super-2 number, since 2×12838476249² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12838476195 and 12838476204.

It is not an unprimeable number, because it can be changed into a prime (12838476229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60845754 + ... + 60845964.

Almost surely, 2^12838476249 is an apocalyptic number.

12838476249 is the 113307-th square number.

12838476249 is the 56654-th centered octagonal number.

It is an amenable number.

12838476249 is a deficient number, since it is larger than the sum of its proper divisors (5898969660).

12838476249 is an frugal number, since it uses more digits than its factorization.

12838476249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 393 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 12838476249 in words is "twelve billion, eight hundred thirty-eight million, four hundred seventy-six thousand, two hundred forty-nine".