12390356249 has 4 divisors (see below), whose sum is σ = 12391397136. Its totient is φ = 12389315364.

The previous prime is 12390356239. The next prime is 12390356257. The reversal of 12390356249 is 94265309321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94265309321 = 1597 ⋅59026493.

It is a cyclic number.

It is not a de Polignac number, because 12390356249 - 2¹² = 12390352153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12390356239) 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, 502379 + ... + 526464.

It is an arithmetic number, because the mean of its divisors is an integer number (3097849284).

Almost surely, 2^12390356249 is an apocalyptic number.

It is an amenable number.

12390356249 is a deficient number, since it is larger than the sum of its proper divisors (1040887).

12390356249 is a wasteful number, since it uses less digits than its factorization.

12390356249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040886.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 12390356249 in words is "twelve billion, three hundred ninety million, three hundred fifty-six thousand, two hundred forty-nine".