16933393 has 2 divisors, whose sum is σ = 16933394. Its totient is φ = 16933392.

The previous prime is 16933391. The next prime is 16933421. The reversal of 16933393 is 39333961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12194064 + 4739329 = 3492^2 + 2177^2 .

It is a cyclic number.

It is not a de Polignac number, because 16933393 - 2¹ = 16933391 is a prime.

Together with 16933391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16933391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8466696 + 8466697.

It is an arithmetic number, because the mean of its divisors is an integer number (8466697).

Almost surely, 2^16933393 is an apocalyptic number.

It is an amenable number.

16933393 is a deficient number, since it is larger than the sum of its proper divisors (1).

16933393 is an equidigital number, since it uses as much as digits as its factorization.

16933393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 37.

The square root of 16933393 is about 4115.0204130721. The cubic root of 16933393 is about 256.7919051110.

The spelling of 16933393 in words is "sixteen million, nine hundred thirty-three thousand, three hundred ninety-three".