8940309 has 16 divisors (see below), whose sum is σ = 13679232. Its totient is φ = 5087808.

The previous prime is 8940301. The next prime is 8940311. The reversal of 8940309 is 9030498.

It is not a de Polignac number, because 8940309 - 2³ = 8940301 is a prime.

8940309 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8940309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8940301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5427 + ... + 6879.

It is an arithmetic number, because the mean of its divisors is an integer number (854952).

Almost surely, 2^8940309 is an apocalyptic number.

It is an amenable number.

8940309 is a deficient number, since it is larger than the sum of its proper divisors (4738923).

8940309 is a wasteful number, since it uses less digits than its factorization.

8940309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 8940309 is about 2990.0349496285. The cubic root of 8940309 is about 207.5475015844.

The spelling of 8940309 in words is "eight million, nine hundred forty thousand, three hundred nine".