16213899 has 16 divisors (see below), whose sum is σ = 24034304. Its totient is φ = 9655200.

The previous prime is 16213853. The next prime is 16213921. The reversal of 16213899 is 99831261.

It is not a de Polignac number, because 16213899 - 2¹² = 16209803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16213829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5497 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (1502144).

Almost surely, 2^16213899 is an apocalyptic number.

16213899 is a deficient number, since it is larger than the sum of its proper divisors (7820405).

16213899 is a wasteful number, since it uses less digits than its factorization.

16213899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13458.

The product of its digits is 23328, while the sum is 39.

The square root of 16213899 is about 4026.6486064716. The cubic root of 16213899 is about 253.1021423042.

The spelling of 16213899 in words is "sixteen million, two hundred thirteen thousand, eight hundred ninety-nine".