16959493 has 4 divisors (see below), whose sum is σ = 17002188. Its totient is φ = 16916800.

The previous prime is 16959469. The next prime is 16959497. The reversal of 16959493 is 39495961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39495961 = 859 ⋅45979.

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 5008644 = 3457^2 + 2238^2 .

It is a cyclic number.

It is not a de Polignac number, because 16959493 - 2¹³ = 16951301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16959497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20746 + ... + 21547.

It is an arithmetic number, because the mean of its divisors is an integer number (4250547).

Almost surely, 2^16959493 is an apocalyptic number.

It is an amenable number.

16959493 is a deficient number, since it is larger than the sum of its proper divisors (42695).

16959493 is an equidigital number, since it uses as much as digits as its factorization.

16959493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42694.

The product of its digits is 262440, while the sum is 46.

The square root of 16959493 is about 4118.1905006932. The cubic root of 16959493 is about 256.9237713430.

The spelling of 16959493 in words is "sixteen million, nine hundred fifty-nine thousand, four hundred ninety-three".