16220899 has 2 divisors, whose sum is σ = 16220900. Its totient is φ = 16220898.

The previous prime is 16220891. The next prime is 16220917. The reversal of 16220899 is 99802261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16220899 - 2³ = 16220891 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (16220891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110449 + 8110450.

It is an arithmetic number, because the mean of its divisors is an integer number (8110450).

Almost surely, 2^16220899 is an apocalyptic number.

16220899 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220899 is an equidigital number, since it uses as much as digits as its factorization.

16220899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16220899 is about 4027.5177218729. The cubic root of 16220899 is about 253.1385608545.

Adding to 16220899 its product of nonzero digits (15552), we get a triangular number (16236451 = T₅₆₉₈).

The spelling of 16220899 in words is "sixteen million, two hundred twenty thousand, eight hundred ninety-nine".