994388573 has 2 divisors, whose sum is σ = 994388574. Its totient is φ = 994388572.

The previous prime is 994388567. The next prime is 994388611. The reversal of 994388573 is 375883499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874858084 + 119530489 = 29578^2 + 10933^2 .

It is an emirp because it is prime and its reverse (375883499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994388573 - 2¹⁰ = 994387549 is a prime.

It is a super-2 number, since 2×994388573² = 1977617268225952658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994388513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497194286 + 497194287.

It is an arithmetic number, because the mean of its divisors is an integer number (497194287).

Almost surely, 2^994388573 is an apocalyptic number.

It is an amenable number.

994388573 is a deficient number, since it is larger than the sum of its proper divisors (1).

994388573 is an equidigital number, since it uses as much as digits as its factorization.

994388573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The square root of 994388573 is about 31533.9273323194. The cubic root of 994388573 is about 998.1260147062.

The spelling of 994388573 in words is "nine hundred ninety-four million, three hundred eighty-eight thousand, five hundred seventy-three".