16904959 has 4 divisors (see below), whose sum is σ = 16917120. Its totient is φ = 16892800.

The previous prime is 16904947. The next prime is 16904963. The reversal of 16904959 is 95940961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95940961 = 29 ⋅3308309.

It is a cyclic number.

It is not a de Polignac number, because 16904959 - 2⁷ = 16904831 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 (16904969) 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, 3679 + ... + 6880.

It is an arithmetic number, because the mean of its divisors is an integer number (4229280).

Almost surely, 2^16904959 is an apocalyptic number.

16904959 is a deficient number, since it is larger than the sum of its proper divisors (12161).

16904959 is a wasteful number, since it uses less digits than its factorization.

16904959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 16904959 is about 4111.5640576306. The cubic root of 16904959 is about 256.6480923947.

The spelling of 16904959 in words is "sixteen million, nine hundred four thousand, nine hundred fifty-nine".