994884689 has 2 divisors, whose sum is σ = 994884690. Its totient is φ = 994884688.

The previous prime is 994884629. The next prime is 994884691. The reversal of 994884689 is 986488499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717329089 + 277555600 = 26783^2 + 16660^2 .

It is a cyclic number.

It is not a de Polignac number, because 994884689 - 2¹⁶ = 994819153 is a prime.

Together with 994884691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (994884629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497442344 + 497442345.

It is an arithmetic number, because the mean of its divisors is an integer number (497442345).

Almost surely, 2^994884689 is an apocalyptic number.

It is an amenable number.

994884689 is a deficient number, since it is larger than the sum of its proper divisors (1).

994884689 is an equidigital number, since it uses as much as digits as its factorization.

994884689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35831808, while the sum is 65.

The square root of 994884689 is about 31541.7927359876. The cubic root of 994884689 is about 998.2919806642.

The spelling of 994884689 in words is "nine hundred ninety-four million, eight hundred eighty-four thousand, six hundred eighty-nine".