16279399 has 2 divisors, whose sum is σ = 16279400. Its totient is φ = 16279398.

The previous prime is 16279391. The next prime is 16279429. The reversal of 16279399 is 99397261.

It is a weak prime.

It is an emirp because it is prime and its reverse (99397261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16279399 - 2³ = 16279391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16279391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8139699 + 8139700.

It is an arithmetic number, because the mean of its divisors is an integer number (8139700).

Almost surely, 2^16279399 is an apocalyptic number.

16279399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16279399 is an equidigital number, since it uses as much as digits as its factorization.

16279399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 46.

The square root of 16279399 is about 4034.7737235191. The cubic root of 16279399 is about 253.4425070001.

It can be divided in two parts, 1627 and 9399, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 16279399 in words is "sixteen million, two hundred seventy-nine thousand, three hundred ninety-nine".