16429439 has 4 divisors (see below), whose sum is σ = 17693256. Its totient is φ = 15165624.

The previous prime is 16429423. The next prime is 16429447. The reversal of 16429439 is 93492461.

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 16429439 - 2⁴ = 16429423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16429459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631889 + ... + 631914.

It is an arithmetic number, because the mean of its divisors is an integer number (4423314).

Almost surely, 2^16429439 is an apocalyptic number.

16429439 is a deficient number, since it is larger than the sum of its proper divisors (1263817).

16429439 is a wasteful number, since it uses less digits than its factorization.

16429439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263816.

The product of its digits is 46656, while the sum is 38.

The square root of 16429439 is about 4053.3244380385. The cubic root of 16429439 is about 254.2187494927.

The spelling of 16429439 in words is "sixteen million, four hundred twenty-nine thousand, four hundred thirty-nine".