309422 has 8 divisors (see below), whose sum is σ = 468072. Its totient is φ = 153400.

The previous prime is 309403. The next prime is 309433. The reversal of 309422 is 224903.

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

It is a junction number, because it is equal to n+sod(n) for n = 309394 and 309403.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309422.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (58509).

2³⁰⁹⁴²² is an apocalyptic number.

309422 is a deficient number, since it is larger than the sum of its proper divisors (158650).

309422 is a wasteful number, since it uses less digits than its factorization.

309422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 309422 is about 556.2571347857. The cubic root of 309422 is about 67.6369054927.

The spelling of 309422 in words is "three hundred nine thousand, four hundred twenty-two".