994517087 has 4 divisors (see below), whose sum is σ = 994580160. Its totient is φ = 994454016.

The previous prime is 994517053. The next prime is 994517089. The reversal of 994517087 is 780715499.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 780715499 = 271 ⋅2880869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994517087 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 (994517089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15698 + ... + 47280.

It is an arithmetic number, because the mean of its divisors is an integer number (248645040).

Almost surely, 2^994517087 is an apocalyptic number.

994517087 is a deficient number, since it is larger than the sum of its proper divisors (63073).

994517087 is a wasteful number, since it uses less digits than its factorization.

994517087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63072.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 994517087 is about 31535.9649765153. The cubic root of 994517087 is about 998.1690118619.

The spelling of 994517087 in words is "nine hundred ninety-four million, five hundred seventeen thousand, eighty-seven".