922990 has 16 divisors (see below), whose sum is σ = 1734048. Its totient is φ = 353056.

The previous prime is 922973. The next prime is 922993. The reversal of 922990 is 99229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922993) by changing a digit.

922990 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1777 + ... + 2236.

It is an arithmetic number, because the mean of its divisors is an integer number (108378).

2⁹²²⁹⁹⁰ is an apocalyptic number.

922990 is a deficient number, since it is larger than the sum of its proper divisors (811058).

922990 is a wasteful number, since it uses less digits than its factorization.

922990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 922990 is about 960.7236855621. The cubic root of 922990 is about 97.3641324729.

The spelling of 922990 in words is "nine hundred twenty-two thousand, nine hundred ninety".