309922 has 8 divisors (see below), whose sum is σ = 470736. Its totient is φ = 153012.

The previous prime is 309899. The next prime is 309929. The reversal of 309922 is 229903.

309922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (309929) by changing a digit.

309922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (58842).

2³⁰⁹⁹²² is an apocalyptic number.

309922 is a deficient number, since it is larger than the sum of its proper divisors (160814).

309922 is a wasteful number, since it uses less digits than its factorization.

309922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 309922 is about 556.7063858085. The cubic root of 309922 is about 67.6733177422.

The spelling of 309922 in words is "three hundred nine thousand, nine hundred twenty-two".