16209441 has 12 divisors (see below), whose sum is σ = 24046932. Its totient is φ = 10514016.

The previous prime is 16209433. The next prime is 16209493. The reversal of 16209441 is 14490261.

16209441 is a `hidden beast` number, since 16 + 209 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12047841 + 4161600 = 3471^2 + 2040^2 .

It is not a de Polignac number, because 16209441 - 2³ = 16209433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16209421) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24006 + ... + 24671.

It is an arithmetic number, because the mean of its divisors is an integer number (2003911).

Almost surely, 2^16209441 is an apocalyptic number.

It is an amenable number.

16209441 is a deficient number, since it is larger than the sum of its proper divisors (7837491).

16209441 is a wasteful number, since it uses less digits than its factorization.

16209441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48720 (or 48717 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16209441 is about 4026.0950063306. The cubic root of 16209441 is about 253.0789434266.

The spelling of 16209441 in words is "sixteen million, two hundred nine thousand, four hundred forty-one".