16439801 has 16 divisors (see below), whose sum is σ = 19408896. Its totient is φ = 13633296.

The previous prime is 16439791. The next prime is 16439809. The reversal of 16439801 is 10893461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16439801 - 2¹⁰ = 16438777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16439809) 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 15 ways as a sum of consecutive naturals, for example, 34970 + ... + 35436.

It is an arithmetic number, because the mean of its divisors is an integer number (1213056).

Almost surely, 2^16439801 is an apocalyptic number.

It is an amenable number.

16439801 is a deficient number, since it is larger than the sum of its proper divisors (2969095).

16439801 is a wasteful number, since it uses less digits than its factorization.

16439801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16439801 is about 4054.6024466031. The cubic root of 16439801 is about 254.2721832725.

The spelling of 16439801 in words is "sixteen million, four hundred thirty-nine thousand, eight hundred one".