309796 has 12 divisors (see below), whose sum is σ = 555660. Its totient is φ = 151040.

The previous prime is 309781. The next prime is 309797. The reversal of 309796 is 697903.

It can be written as a sum of positive squares in 2 ways, for example, as 69696 + 240100 = 264^2 + 490^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309797) by changing a digit.

309796 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, 781 + ... + 1108.

It is an arithmetic number, because the mean of its divisors is an integer number (46305).

2³⁰⁹⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

309796 is a deficient number, since it is larger than the sum of its proper divisors (245864).

309796 is a wasteful number, since it uses less digits than its factorization.

309796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 309796 is about 556.5932087261. The cubic root of 309796 is about 67.6641455485.

The spelling of 309796 in words is "three hundred nine thousand, seven hundred ninety-six".