993941539 has 2 divisors, whose sum is σ = 993941540. Its totient is φ = 993941538.

The previous prime is 993941521. The next prime is 993941549. The reversal of 993941539 is 935149399.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993941539 is a prime.

It is not a weakly prime, because it can be changed into another prime (993941549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496970769 + 496970770.

It is an arithmetic number, because the mean of its divisors is an integer number (496970770).

Almost surely, 2^993941539 is an apocalyptic number.

993941539 is a deficient number, since it is larger than the sum of its proper divisors (1).

993941539 is an equidigital number, since it uses as much as digits as its factorization.

993941539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1180980, while the sum is 52.

The square root of 993941539 is about 31526.8383920748. The cubic root of 993941539 is about 997.9764208897.

The spelling of 993941539 in words is "nine hundred ninety-three million, nine hundred forty-one thousand, five hundred thirty-nine".