994670993 has 2 divisors, whose sum is σ = 994670994. Its totient is φ = 994670992.

The previous prime is 994670987. The next prime is 994671017. The reversal of 994670993 is 399076499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 764633104 + 230037889 = 27652^2 + 15167^2 .

It is an emirp because it is prime and its reverse (399076499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994670993 - 2⁴ = 994670977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (994670923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497335496 + 497335497.

It is an arithmetic number, because the mean of its divisors is an integer number (497335497).

Almost surely, 2^994670993 is an apocalyptic number.

It is an amenable number.

994670993 is a deficient number, since it is larger than the sum of its proper divisors (1).

994670993 is an equidigital number, since it uses as much as digits as its factorization.

994670993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 56.

The square root of 994670993 is about 31538.4050484485. The cubic root of 994670993 is about 998.2204995900.

The spelling of 994670993 in words is "nine hundred ninety-four million, six hundred seventy thousand, nine hundred ninety-three".