940308909 has 16 divisors (see below), whose sum is σ = 1273524672. Its totient is φ = 617038848.

The previous prime is 940308871. The next prime is 940308923. The reversal of 940308909 is 909803049.

It is not a de Polignac number, because 940308909 - 2¹⁷ = 940177837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940308959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62157 + ... + 75789.

It is an arithmetic number, because the mean of its divisors is an integer number (79595292).

Almost surely, 2^940308909 is an apocalyptic number.

It is an amenable number.

940308909 is a deficient number, since it is larger than the sum of its proper divisors (333215763).

940308909 is a wasteful number, since it uses less digits than its factorization.

940308909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13996.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 940308909 is about 30664.4567700131. The cubic root of 940308909 is about 979.6934029792.

The spelling of 940308909 in words is "nine hundred forty million, three hundred eight thousand, nine hundred nine".