16994855 has 4 divisors (see below), whose sum is σ = 20393832. Its totient is φ = 13595880.

The previous prime is 16994843. The next prime is 16994863. The reversal of 16994855 is 55849961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55849961 = 331 ⋅168731.

It is not a de Polignac number, because 16994855 - 2¹⁰ = 16993831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699481 + ... + 1699490.

It is an arithmetic number, because the mean of its divisors is an integer number (5098458).

Almost surely, 2^16994855 is an apocalyptic number.

16994855 is a deficient number, since it is larger than the sum of its proper divisors (3398977).

16994855 is an equidigital number, since it uses as much as digits as its factorization.

16994855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398976.

The product of its digits is 388800, while the sum is 47.

The square root of 16994855 is about 4122.4816555080. The cubic root of 16994855 is about 257.1022167548.

The spelling of 16994855 in words is "sixteen million, nine hundred ninety-four thousand, eight hundred fifty-five".