16439842 has 8 divisors (see below), whose sum is σ = 24677532. Its totient is φ = 8214000.

The previous prime is 16439809. The next prime is 16439861. The reversal of 16439842 is 24893461.

It can be written as a sum of positive squares in 2 ways, for example, as 16410601 + 29241 = 4051^2 + 171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 2592 + ... + 6292.

Almost surely, 2^16439842 is an apocalyptic number.

16439842 is a deficient number, since it is larger than the sum of its proper divisors (8237690).

16439842 is a wasteful number, since it uses less digits than its factorization.

16439842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924.

The product of its digits is 41472, while the sum is 37.

The square root of 16439842 is about 4054.6075025827. The cubic root of 16439842 is about 254.2723946528.

The spelling of 16439842 in words is "sixteen million, four hundred thirty-nine thousand, eight hundred forty-two".