994785389 has 8 divisors (see below), whose sum is σ = 1075988760. Its totient is φ = 914250816.

The previous prime is 994785329. The next prime is 994785427. The reversal of 994785389 is 983587499.

It can be written as a sum of positive squares in 4 ways, for example, as 121110025 + 873675364 = 11005^2 + 29558^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994785389 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 (994785329) 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 7 ways as a sum of consecutive naturals, for example, 164102 + ... + 170055.

It is an arithmetic number, because the mean of its divisors is an integer number (134498595).

Almost surely, 2^994785389 is an apocalyptic number.

It is an amenable number.

994785389 is a deficient number, since it is larger than the sum of its proper divisors (81203371).

994785389 is a wasteful number, since it uses less digits than its factorization.

994785389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334399.

The product of its digits is 19595520, while the sum is 62.

The square root of 994785389 is about 31540.2185946769. The cubic root of 994785389 is about 998.2587661979.

The spelling of 994785389 in words is "nine hundred ninety-four million, seven hundred eighty-five thousand, three hundred eighty-nine".