12774989 has 8 divisors (see below), whose sum is σ = 13001472. Its totient is φ = 12550720.

The previous prime is 12774977. The next prime is 12774991. The reversal of 12774989 is 98947721.

12774989 = T₈₇ + T₈₈ + ... + T₄₂₅.

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 12774989 - 2⁸ = 12774733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12774389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14372 + ... + 15234.

It is an arithmetic number, because the mean of its divisors is an integer number (1625184).

Almost surely, 2^12774989 is an apocalyptic number.

It is an amenable number.

12774989 is a deficient number, since it is larger than the sum of its proper divisors (226483).

12774989 is a wasteful number, since it uses less digits than its factorization.

12774989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107.

The product of its digits is 254016, while the sum is 47.

The square root of 12774989 is about 3574.2116613318. The cubic root of 12774989 is about 233.7689601138.

The spelling of 12774989 in words is "twelve million, seven hundred seventy-four thousand, nine hundred eighty-nine".