16889047 has 4 divisors (see below), whose sum is σ = 19301776. Its totient is φ = 14476320.

The previous prime is 16889023. The next prime is 16889069. The reversal of 16889047 is 74098861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74098861 = 5749 ⋅12889.

It is a cyclic number.

It is not a de Polignac number, because 16889047 - 2¹⁹ = 16364759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16888994 and 16889012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889077) 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, 1206354 + ... + 1206367.

It is an arithmetic number, because the mean of its divisors is an integer number (4825444).

Almost surely, 2^16889047 is an apocalyptic number.

16889047 is a deficient number, since it is larger than the sum of its proper divisors (2412729).

16889047 is an equidigital number, since it uses as much as digits as its factorization.

16889047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412728.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 16889047 is about 4109.6285720245. The cubic root of 16889047 is about 256.5675427284.

The spelling of 16889047 in words is "sixteen million, eight hundred eighty-nine thousand, forty-seven".