994878499 has 2 divisors, whose sum is σ = 994878500. Its totient is φ = 994878498.

The previous prime is 994878497. The next prime is 994878509.

994878499 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 994878499 - 2¹ = 994878497 is a prime.

Together with 994878497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (994878491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497439249 + 497439250.

It is an arithmetic number, because the mean of its divisors is an integer number (497439250).

Almost surely, 2^994878499 is an apocalyptic number.

994878499 is a deficient number, since it is larger than the sum of its proper divisors (1).

994878499 is an equidigital number, since it uses as much as digits as its factorization.

994878499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 67.

The square root of 994878499 is about 31541.6946120528. The cubic root of 994878499 is about 998.2899102601.

The spelling of 994878499 in words is "nine hundred ninety-four million, eight hundred seventy-eight thousand, four hundred ninety-nine".