16988799 has 4 divisors (see below), whose sum is σ = 22651736. Its totient is φ = 11325864.

The previous prime is 16988791. The next prime is 16988819. The reversal of 16988799 is 99788961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99788961 = 3 ⋅33262987.

It is not a de Polignac number, because 16988799 - 2³ = 16988791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16988791) 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, 2831464 + ... + 2831469.

It is an arithmetic number, because the mean of its divisors is an integer number (5662934).

Almost surely, 2^16988799 is an apocalyptic number.

16988799 is a deficient number, since it is larger than the sum of its proper divisors (5662937).

16988799 is an equidigital number, since it uses as much as digits as its factorization.

16988799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662936.

The product of its digits is 1959552, while the sum is 57.

The square root of 16988799 is about 4121.7470810325. The cubic root of 16988799 is about 257.0716742562.

The spelling of 16988799 in words is "sixteen million, nine hundred eighty-eight thousand, seven hundred ninety-nine".