922749 has 4 divisors (see below), whose sum is σ = 1230336. Its totient is φ = 615164.

The previous prime is 922741. The next prime is 922781. The reversal of 922749 is 947229.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 947229 = 3 ⋅315743.

It is a cyclic number.

It is not a de Polignac number, because 922749 - 2³ = 922741 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153789 + ... + 153794.

It is an arithmetic number, because the mean of its divisors is an integer number (307584).

2⁹²²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

922749 is a deficient number, since it is larger than the sum of its proper divisors (307587).

922749 is a wasteful number, since it uses less digits than its factorization.

922749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307586.

The product of its digits is 9072, while the sum is 33.

The square root of 922749 is about 960.5982510915. The cubic root of 922749 is about 97.3556575532.

The spelling of 922749 in words is "nine hundred twenty-two thousand, seven hundred forty-nine".