939418309 has 4 divisors (see below), whose sum is σ = 951309760. Its totient is φ = 927526860.

The previous prime is 939418303. The next prime is 939418357. The reversal of 939418309 is 903814939.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 939418309 - 2⁹ = 939417797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939418303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5945607 + ... + 5945764.

It is an arithmetic number, because the mean of its divisors is an integer number (237827440).

Almost surely, 2^939418309 is an apocalyptic number.

It is an amenable number.

939418309 is a deficient number, since it is larger than the sum of its proper divisors (11891451).

939418309 is a wasteful number, since it uses less digits than its factorization.

939418309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891450.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 939418309 is about 30649.9316312451. The cubic root of 939418309 is about 979.3840044597.

The spelling of 939418309 in words is "nine hundred thirty-nine million, four hundred eighteen thousand, three hundred nine".