997002943 has 2 divisors, whose sum is σ = 997002944. Its totient is φ = 997002942.

The previous prime is 997002931. The next prime is 997003043. The reversal of 997002943 is 349200799.

It is a weak prime.

It is an emirp because it is prime and its reverse (349200799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997002943 - 2⁹ = 997002431 is a prime.

It is a super-2 number, since 2×997002943² = 1988029736701322498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 997002943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997002913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498501471 + 498501472.

It is an arithmetic number, because the mean of its divisors is an integer number (498501472).

Almost surely, 2^997002943 is an apocalyptic number.

997002943 is a deficient number, since it is larger than the sum of its proper divisors (1).

997002943 is an equidigital number, since it uses as much as digits as its factorization.

997002943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 997002943 is about 31575.3534105321. The cubic root of 997002943 is about 998.9999812959. Note that the first 4 decimals are identical.

The spelling of 997002943 in words is "nine hundred ninety-seven million, two thousand, nine hundred forty-three".