309622 has 8 divisors (see below), whose sum is σ = 468000. Its totient is φ = 153624.

The previous prime is 309599. The next prime is 309623. The reversal of 309622 is 226903.

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

It is an Ulam number.

It is a plaindrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 309593 and 309602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309623) 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, 222 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (58500).

2³⁰⁹⁶²² is an apocalyptic number.

309622 is a deficient number, since it is larger than the sum of its proper divisors (158378).

309622 is a wasteful number, since it uses less digits than its factorization.

309622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 309622 is about 556.4368787203. The cubic root of 309622 is about 67.6514750962.

The spelling of 309622 in words is "three hundred nine thousand, six hundred twenty-two".