16213399 has 2 divisors, whose sum is σ = 16213400. Its totient is φ = 16213398.

The previous prime is 16213391. The next prime is 16213411. The reversal of 16213399 is 99331261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16213399 - 2³ = 16213391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16213391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106699 + 8106700.

It is an arithmetic number, because the mean of its divisors is an integer number (8106700).

Almost surely, 2^16213399 is an apocalyptic number.

16213399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16213399 is an equidigital number, since it uses as much as digits as its factorization.

16213399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 16213399 is about 4026.5865196218. The cubic root of 16213399 is about 253.0995405781.

The spelling of 16213399 in words is "sixteen million, two hundred thirteen thousand, three hundred ninety-nine".