16989763 has 4 divisors (see below), whose sum is σ = 19416880. Its totient is φ = 14562648.

The previous prime is 16989761. The next prime is 16989769. The reversal of 16989763 is 36798961.

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 16989763 - 2¹ = 16989761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16989761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213548 + ... + 1213561.

It is an arithmetic number, because the mean of its divisors is an integer number (4854220).

Almost surely, 2^16989763 is an apocalyptic number.

16989763 is a deficient number, since it is larger than the sum of its proper divisors (2427117).

16989763 is an equidigital number, since it uses as much as digits as its factorization.

16989763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427116.

The product of its digits is 489888, while the sum is 49.

The square root of 16989763 is about 4121.8640200764. The cubic root of 16989763 is about 257.0765365267.

The spelling of 16989763 in words is "sixteen million, nine hundred eighty-nine thousand, seven hundred sixty-three".