12922749 has 24 divisors (see below), whose sum is σ = 21857472. Its totient is φ = 7202880.

The previous prime is 12922739. The next prime is 12922769. The reversal of 12922749 is 94722921.

It is not a de Polignac number, because 12922749 - 2⁴ = 12922733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12922709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (910728).

Almost surely, 2^12922749 is an apocalyptic number.

It is an amenable number.

12922749 is a deficient number, since it is larger than the sum of its proper divisors (8934723).

12922749 is a wasteful number, since it uses less digits than its factorization.

12922749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057 (or 5054 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 12922749 is about 3594.8225269128. The cubic root of 12922749 is about 234.6667919876. Note that the first 3 decimals are identical.

It can be divided in two parts, 12 and 922749, that added together give a triangular number (922761 = T₁₃₅₈).

The spelling of 12922749 in words is "twelve million, nine hundred twenty-two thousand, seven hundred forty-nine".