16499933 has 2 divisors, whose sum is σ = 16499934. Its totient is φ = 16499932.

The previous prime is 16499929. The next prime is 16499939. The reversal of 16499933 is 33999461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 4919524 = 3403^2 + 2218^2 .

It is an emirp because it is prime and its reverse (33999461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16499933 - 2² = 16499929 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16499939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8249966 + 8249967.

It is an arithmetic number, because the mean of its divisors is an integer number (8249967).

Almost surely, 2^16499933 is an apocalyptic number.

It is an amenable number.

16499933 is a deficient number, since it is larger than the sum of its proper divisors (1).

16499933 is an equidigital number, since it uses as much as digits as its factorization.

16499933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 44.

The square root of 16499933 is about 4062.0109551797. The cubic root of 16499933 is about 254.5818238965.

The spelling of 16499933 in words is "sixteen million, four hundred ninety-nine thousand, nine hundred thirty-three".