993921367 has 2 divisors, whose sum is σ = 993921368. Its totient is φ = 993921366.

The previous prime is 993921301. The next prime is 993921389. The reversal of 993921367 is 763129399.

It is a strong prime.

It is an emirp because it is prime and its reverse (763129399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993921367 - 2⁷ = 993921239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 993921367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993925367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496960683 + 496960684.

It is an arithmetic number, because the mean of its divisors is an integer number (496960684).

Almost surely, 2^993921367 is an apocalyptic number.

993921367 is a deficient number, since it is larger than the sum of its proper divisors (1).

993921367 is an equidigital number, since it uses as much as digits as its factorization.

993921367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 49.

The square root of 993921367 is about 31526.5184725494. The cubic root of 993921367 is about 997.9696695481.

The spelling of 993921367 in words is "nine hundred ninety-three million, nine hundred twenty-one thousand, three hundred sixty-seven".