994443913 has 2 divisors, whose sum is σ = 994443914. Its totient is φ = 994443912.

The previous prime is 994443911. The next prime is 994443943. The reversal of 994443913 is 319344499.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528402169 + 466041744 = 22987^2 + 21588^2 .

It is a cyclic number.

It is not a de Polignac number, because 994443913 - 2¹ = 994443911 is a prime.

It is a super-3 number, since 3×994443913³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 994443911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (994443911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497221956 + 497221957.

It is an arithmetic number, because the mean of its divisors is an integer number (497221957).

Almost surely, 2^994443913 is an apocalyptic number.

It is an amenable number.

994443913 is a deficient number, since it is larger than the sum of its proper divisors (1).

994443913 is an equidigital number, since it uses as much as digits as its factorization.

994443913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 994443913 is about 31534.8047877262. The cubic root of 994443913 is about 998.1445303617.

The spelling of 994443913 in words is "nine hundred ninety-four million, four hundred forty-three thousand, nine hundred thirteen".