12749969 has 8 divisors (see below), whose sum is σ = 13455840. Its totient is φ = 12047616.

The previous prime is 12749953. The next prime is 12750011. The reversal of 12749969 is 96994721.

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 12749969 - 2⁴ = 12749953 is a prime.

It is a super-2 number, since 2×12749969² = 325123419001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12769969) 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, 10382 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (1681980).

Almost surely, 2^12749969 is an apocalyptic number.

12749969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12749969 is a deficient number, since it is larger than the sum of its proper divisors (705871).

12749969 is a wasteful number, since it uses less digits than its factorization.

12749969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its digits is 244944, while the sum is 47.

The square root of 12749969 is about 3570.7098734005. The cubic root of 12749969 is about 233.6162470814.

The spelling of 12749969 in words is "twelve million, seven hundred forty-nine thousand, nine hundred sixty-nine".