16789799 has 4 divisors (see below), whose sum is σ = 18081336. Its totient is φ = 15498264.

The previous prime is 16789789. The next prime is 16789813. The reversal of 16789799 is 99798761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99798761 = 373 ⋅267557.

It is a cyclic number.

It is not a de Polignac number, because 16789799 - 2⁴ = 16789783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16789709) 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, 645749 + ... + 645774.

It is an arithmetic number, because the mean of its divisors is an integer number (4520334).

Almost surely, 2^16789799 is an apocalyptic number.

16789799 is a deficient number, since it is larger than the sum of its proper divisors (1291537).

16789799 is a wasteful number, since it uses less digits than its factorization.

16789799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291536.

The product of its digits is 1714608, while the sum is 56.

The square root of 16789799 is about 4097.5357228461. The cubic root of 16789799 is about 256.0639844540.

The spelling of 16789799 in words is "sixteen million, seven hundred eighty-nine thousand, seven hundred ninety-nine".