16699449 has 16 divisors (see below), whose sum is σ = 25022592. Its totient is φ = 9829248.

The previous prime is 16699433. The next prime is 16699451. The reversal of 16699449 is 94499661.

It is not a de Polignac number, because 16699449 - 2⁴ = 16699433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16699398 and 16699407.

It is not an unprimeable number, because it can be changed into a prime (16699649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8412 + ... + 10205.

It is an arithmetic number, because the mean of its divisors is an integer number (1563912).

Almost surely, 2^16699449 is an apocalyptic number.

It is an amenable number.

16699449 is a deficient number, since it is larger than the sum of its proper divisors (8323143).

16699449 is a wasteful number, since it uses less digits than its factorization.

16699449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18656.

The product of its digits is 419904, while the sum is 48.

The square root of 16699449 is about 4086.4959317244. The cubic root of 16699449 is about 255.6038438542.

The spelling of 16699449 in words is "sixteen million, six hundred ninety-nine thousand, four hundred forty-nine".