16699427 has 2 divisors, whose sum is σ = 16699428. Its totient is φ = 16699426.

The previous prime is 16699393. The next prime is 16699433. The reversal of 16699427 is 72499661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16699427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16699477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349713 + 8349714.

It is an arithmetic number, because the mean of its divisors is an integer number (8349714).

Almost surely, 2^16699427 is an apocalyptic number.

16699427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699427 is an equidigital number, since it uses as much as digits as its factorization.

16699427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 16699427 is about 4086.4932399308. The cubic root of 16699427 is about 255.6037316093.

The spelling of 16699427 in words is "sixteen million, six hundred ninety-nine thousand, four hundred twenty-seven".