16769891 has 4 divisors (see below), whose sum is σ = 16785384. Its totient is φ = 16754400.

The previous prime is 16769887. The next prime is 16769897. The reversal of 16769891 is 19896761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16769891 - 2² = 16769887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16769897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5990 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (4196346).

Almost surely, 2^16769891 is an apocalyptic number.

16769891 is a deficient number, since it is larger than the sum of its proper divisors (15493).

16769891 is a wasteful number, since it uses less digits than its factorization.

16769891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15492.

The product of its digits is 163296, while the sum is 47.

The square root of 16769891 is about 4095.1057373406. The cubic root of 16769891 is about 255.9627376999.

The spelling of 16769891 in words is "sixteen million, seven hundred sixty-nine thousand, eight hundred ninety-one".