16997441 has 4 divisors (see below), whose sum is σ = 17068800. Its totient is φ = 16926084.

The previous prime is 16997429. The next prime is 16997443. The reversal of 16997441 is 14479961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14479961 = 29 ⋅499309.

It is a cyclic number.

It is not a de Polignac number, because 16997441 - 2⁶ = 16997377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16997443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35321 + ... + 35798.

It is an arithmetic number, because the mean of its divisors is an integer number (4267200).

Almost surely, 2^16997441 is an apocalyptic number.

It is an amenable number.

16997441 is a deficient number, since it is larger than the sum of its proper divisors (71359).

16997441 is an equidigital number, since it uses as much as digits as its factorization.

16997441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71358.

The product of its digits is 54432, while the sum is 41.

The square root of 16997441 is about 4122.7952896063. The cubic root of 16997441 is about 257.1152566349.

The spelling of 16997441 in words is "sixteen million, nine hundred ninety-seven thousand, four hundred forty-one".