16993449 has 32 divisors (see below), whose sum is σ = 28425600. Its totient is φ = 9938880.

The previous prime is 16993439. The next prime is 16993463. The reversal of 16993449 is 94439961.

It is not a de Polignac number, because 16993449 - 2⁷ = 16993321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16993439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7627 + ... + 9599.

It is an arithmetic number, because the mean of its divisors is an integer number (888300).

Almost surely, 2^16993449 is an apocalyptic number.

It is an amenable number.

16993449 is a deficient number, since it is larger than the sum of its proper divisors (11432151).

16993449 is a wasteful number, since it uses less digits than its factorization.

16993449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2016 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 16993449 is about 4122.3111236296. The cubic root of 16993449 is about 257.0951264583.

The spelling of 16993449 in words is "sixteen million, nine hundred ninety-three thousand, four hundred forty-nine".