16220869 has 4 divisors (see below), whose sum is σ = 18538144. Its totient is φ = 13903596.

The previous prime is 16220807. The next prime is 16220881. The reversal of 16220869 is 96802261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16220869 - 2²¹ = 14123717 is a prime.

It is a super-2 number, since 2×16220869² = 526233182230322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16220899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158627 + ... + 1158640.

It is an arithmetic number, because the mean of its divisors is an integer number (4634536).

Almost surely, 2^16220869 is an apocalyptic number.

It is an amenable number.

16220869 is a deficient number, since it is larger than the sum of its proper divisors (2317275).

16220869 is an equidigital number, since it uses as much as digits as its factorization.

16220869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317274.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 16220869 is about 4027.5139974927. The cubic root of 16220869 is about 253.1384047974.

The spelling of 16220869 in words is "sixteen million, two hundred twenty thousand, eight hundred sixty-nine".