16438069 has 4 divisors (see below), whose sum is σ = 16459744. Its totient is φ = 16416396.

The previous prime is 16438063. The next prime is 16438141. The reversal of 16438069 is 96083461.

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 a cyclic number.

It is not a de Polignac number, because 16438069 - 2⁹ = 16437557 is a prime.

It is a super-2 number, since 2×16438069² = 540420224897522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16438063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9657 + ... + 11230.

It is an arithmetic number, because the mean of its divisors is an integer number (4114936).

Almost surely, 2^16438069 is an apocalyptic number.

It is an amenable number.

16438069 is a deficient number, since it is larger than the sum of its proper divisors (21675).

16438069 is an equidigital number, since it uses as much as digits as its factorization.

16438069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21674.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 16438069 is about 4054.3888565356. The cubic root of 16438069 is about 254.2632534222.

The spelling of 16438069 in words is "sixteen million, four hundred thirty-eight thousand, sixty-nine".