16994489 has 8 divisors (see below), whose sum is σ = 17402688. Its totient is φ = 16591120.

The previous prime is 16994449. The next prime is 16994491. The reversal of 16994489 is 98449961.

It is a happy number.

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 16994489 - 2⁸ = 16994233 is a prime.

It is a super-2 number, since 2×16994489² = 577625312742242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16994429) 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, 6479 + ... + 8715.

It is an arithmetic number, because the mean of its divisors is an integer number (2175336).

Almost surely, 2^16994489 is an apocalyptic number.

It is an amenable number.

16994489 is a deficient number, since it is larger than the sum of its proper divisors (408199).

16994489 is a wasteful number, since it uses less digits than its factorization.

16994489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415.

The product of its digits is 559872, while the sum is 50.

The square root of 16994489 is about 4122.4372645317. The cubic root of 16994489 is about 257.1003710965.

The spelling of 16994489 in words is "sixteen million, nine hundred ninety-four thousand, four hundred eighty-nine".