994481273 has 2 divisors, whose sum is σ = 994481274. Its totient is φ = 994481272.

The previous prime is 994481269. The next prime is 994481287. The reversal of 994481273 is 372184499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994014784 + 466489 = 31528^2 + 683^2 .

It is an emirp because it is prime and its reverse (372184499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994481273 - 2² = 994481269 is a prime.

It is not a weakly prime, because it can be changed into another prime (994481233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497240636 + 497240637.

It is an arithmetic number, because the mean of its divisors is an integer number (497240637).

Almost surely, 2^994481273 is an apocalyptic number.

It is an amenable number.

994481273 is a deficient number, since it is larger than the sum of its proper divisors (1).

994481273 is an equidigital number, since it uses as much as digits as its factorization.

994481273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 994481273 is about 31535.3971435275. The cubic root of 994481273 is about 998.1570298810.

The spelling of 994481273 in words is "nine hundred ninety-four million, four hundred eighty-one thousand, two hundred seventy-three".