993940943 has 2 divisors, whose sum is σ = 993940944. Its totient is φ = 993940942.

The previous prime is 993940919. The next prime is 993940951. The reversal of 993940943 is 349049399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993940943 - 2¹² = 993936847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 993940891 and 993940900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993940903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496970471 + 496970472.

It is an arithmetic number, because the mean of its divisors is an integer number (496970472).

Almost surely, 2^993940943 is an apocalyptic number.

993940943 is a deficient number, since it is larger than the sum of its proper divisors (1).

993940943 is an equidigital number, since it uses as much as digits as its factorization.

993940943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 993940943 is about 31526.8289398093. The cubic root of 993940943 is about 997.9762214165.

The spelling of 993940943 in words is "nine hundred ninety-three million, nine hundred forty thousand, nine hundred forty-three".