16779494 has 16 divisors (see below), whose sum is σ = 26198016. Its totient is φ = 8051400.

The previous prime is 16779491. The next prime is 16779509. The reversal of 16779494 is 49497761.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16779491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6809 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (1637376).

Almost surely, 2^16779494 is an apocalyptic number.

16779494 is a deficient number, since it is larger than the sum of its proper divisors (9418522).

16779494 is a wasteful number, since it uses less digits than its factorization.

16779494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its digits is 381024, while the sum is 47.

The square root of 16779494 is about 4096.2780667333. The cubic root of 16779494 is about 256.0115859828.

The spelling of 16779494 in words is "sixteen million, seven hundred seventy-nine thousand, four hundred ninety-four".