12769981 has 8 divisors (see below), whose sum is σ = 14616000. Its totient is φ = 10929408.

The previous prime is 12769973. The next prime is 12769993. The reversal of 12769981 is 18996721.

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

It is not a de Polignac number, because 12769981 - 2³ = 12769973 is a prime.

It is a super-2 number, since 2×12769981² = 326144829480722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12769961) 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, 7770 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (1827000).

Almost surely, 2^12769981 is an apocalyptic number.

It is an amenable number.

12769981 is a deficient number, since it is larger than the sum of its proper divisors (1846019).

12769981 is a wasteful number, since it uses less digits than its factorization.

12769981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its digits is 54432, while the sum is 43.

The square root of 12769981 is about 3573.5110185922. The cubic root of 12769981 is about 233.7384090643.

The spelling of 12769981 in words is "twelve million, seven hundred sixty-nine thousand, nine hundred eighty-one".