16904093 has 8 divisors (see below), whose sum is σ = 17175480. Its totient is φ = 16634880.

The previous prime is 16904087. The next prime is 16904113. The reversal of 16904093 is 39040961.

It can be written as a sum of positive squares in 4 ways, for example, as 1119364 + 15784729 = 1058^2 + 3973^2 .

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 16904093 - 2⁴ = 16904077 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 (16906093) 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, 21833 + ... + 22593.

It is an arithmetic number, because the mean of its divisors is an integer number (2146935).

Almost surely, 2^16904093 is an apocalyptic number.

It is an amenable number.

16904093 is a deficient number, since it is larger than the sum of its proper divisors (271387).

16904093 is an equidigital number, since it uses as much as digits as its factorization.

16904093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16904093 is about 4111.4587435605. The cubic root of 16904093 is about 256.6437098337.

The spelling of 16904093 in words is "sixteen million, nine hundred four thousand, ninety-three".