16424439 has 4 divisors (see below), whose sum is σ = 21899256. Its totient is φ = 10949624.

The previous prime is 16424423. The next prime is 16424449. The reversal of 16424439 is 93442461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16424439 - 2⁴ = 16424423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16424449) 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, 2737404 + ... + 2737409.

It is an arithmetic number, because the mean of its divisors is an integer number (5474814).

Almost surely, 2^16424439 is an apocalyptic number.

16424439 is a deficient number, since it is larger than the sum of its proper divisors (5474817).

16424439 is an equidigital number, since it uses as much as digits as its factorization.

16424439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474816.

The product of its digits is 20736, while the sum is 33.

The square root of 16424439 is about 4052.7076134357. The cubic root of 16424439 is about 254.1929579301.

The spelling of 16424439 in words is "sixteen million, four hundred twenty-four thousand, four hundred thirty-nine".