994004129 has 2 divisors, whose sum is σ = 994004130. Its totient is φ = 994004128.

The previous prime is 994004111. The next prime is 994004131. The reversal of 994004129 is 921400499.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764633104 + 229371025 = 27652^2 + 15145^2 .

It is a cyclic number.

It is not a de Polignac number, because 994004129 - 2²⁰ = 992955553 is a prime.

Together with 994004131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 994004092 and 994004101.

It is not a weakly prime, because it can be changed into another prime (994004629) 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 as a sum of consecutive naturals, namely, 497002064 + 497002065.

It is an arithmetic number, because the mean of its divisors is an integer number (497002065).

Almost surely, 2^994004129 is an apocalyptic number.

It is an amenable number.

994004129 is a deficient number, since it is larger than the sum of its proper divisors (1).

994004129 is an equidigital number, since it uses as much as digits as its factorization.

994004129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 994004129 is about 31527.8310227646. The cubic root of 994004129 is about 997.9973684775.

The spelling of 994004129 in words is "nine hundred ninety-four million, four thousand, one hundred twenty-nine".