12547969 has 8 divisors (see below), whose sum is σ = 14633600. Its totient is φ = 10755108.

The previous prime is 12547957. The next prime is 12547991. The reversal of 12547969 is 96974521.

It is a happy number.

It is not a de Polignac number, because 12547969 - 2⁷ = 12547841 is a prime.

It is a super-2 number, since 2×12547969² = 314903052049922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12547939) 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, 17949 + ... + 18634.

It is an arithmetic number, because the mean of its divisors is an integer number (1829200).

Almost surely, 2^12547969 is an apocalyptic number.

It is an amenable number.

12547969 is a deficient number, since it is larger than the sum of its proper divisors (2085631).

12547969 is an frugal number, since it uses more digits than its factorization.

12547969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36604 (or 36590 counting only the distinct ones).

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

The square root of 12547969 is about 3542.3112511466. The cubic root of 12547969 is about 232.3759325732.

The spelling of 12547969 in words is "twelve million, five hundred forty-seven thousand, nine hundred sixty-nine".