16439641 has 8 divisors (see below), whose sum is σ = 17708544. Its totient is φ = 15216960.

The previous prime is 16439639. The next prime is 16439653. The reversal of 16439641 is 14693461.

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

It is a cyclic number.

It is not a de Polignac number, because 16439641 - 2¹ = 16439639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16439597 and 16439606.

It is not an unprimeable number, because it can be changed into a prime (16439141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10816 + ... + 12241.

It is an arithmetic number, because the mean of its divisors is an integer number (2213568).

Almost surely, 2^16439641 is an apocalyptic number.

It is an amenable number.

16439641 is a deficient number, since it is larger than the sum of its proper divisors (1268903).

16439641 is a wasteful number, since it uses less digits than its factorization.

16439641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23111.

The product of its digits is 15552, while the sum is 34.

The square root of 16439641 is about 4054.5827158907. The cubic root of 16439641 is about 254.2713583704.

The spelling of 16439641 in words is "sixteen million, four hundred thirty-nine thousand, six hundred forty-one".