16299971 has 2 divisors, whose sum is σ = 16299972. Its totient is φ = 16299970.

The previous prime is 16299947. The next prime is 16299973. The reversal of 16299971 is 17999261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16299971 is a prime.

It is a super-3 number, since 3×16299971³ (a number of 23 digits) contains 333 as substring.

Together with 16299973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16299973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8149985 + 8149986.

It is an arithmetic number, because the mean of its divisors is an integer number (8149986).

Almost surely, 2^16299971 is an apocalyptic number.

16299971 is a deficient number, since it is larger than the sum of its proper divisors (1).

16299971 is an equidigital number, since it uses as much as digits as its factorization.

16299971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 44.

The square root of 16299971 is about 4037.3222561495. The cubic root of 16299971 is about 253.5492190597.

The spelling of 16299971 in words is "sixteen million, two hundred ninety-nine thousand, nine hundred seventy-one".