994381909 has 8 divisors (see below), whose sum is σ = 1008927360. Its totient is φ = 979851600.

The previous prime is 994381873. The next prime is 994381939. The reversal of 994381909 is 909183499.

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

It is a cyclic number.

It is not a de Polignac number, because 994381909 - 2²¹ = 992284757 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 (994381939) 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 7 ways as a sum of consecutive naturals, for example, 247287 + ... + 251275.

It is an arithmetic number, because the mean of its divisors is an integer number (126115920).

Almost surely, 2^994381909 is an apocalyptic number.

It is an amenable number.

994381909 is a deficient number, since it is larger than the sum of its proper divisors (14545451).

994381909 is a wasteful number, since it uses less digits than its factorization.

994381909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 994381909 is about 31533.8216681708. The cubic root of 994381909 is about 998.1237850189.

The spelling of 994381909 in words is "nine hundred ninety-four million, three hundred eighty-one thousand, nine hundred nine".