2309966 has 8 divisors (see below), whose sum is σ = 3584520. Its totient is φ = 1115128.

The previous prime is 2309933. The next prime is 2309969. The reversal of 2309966 is 6699032.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19856 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (448065).

2^2309966 is an apocalyptic number.

2309966 is a deficient number, since it is larger than the sum of its proper divisors (1274554).

2309966 is a wasteful number, since it uses less digits than its factorization.

2309966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39858.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 2309966 is about 1519.8572301371. The cubic root of 2309966 is about 132.1909922660.

The spelling of 2309966 in words is "two million, three hundred nine thousand, nine hundred sixty-six".