16942689 has 32 divisors (see below), whose sum is σ = 26030080. Its totient is φ = 11022480.

The previous prime is 16942687. The next prime is 16942691. The reversal of 16942689 is 98624961.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16942687) and next prime (16942691).

It is not a de Polignac number, because 16942689 - 2¹ = 16942687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16942687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133344 + ... + 133470.

It is an arithmetic number, because the mean of its divisors is an integer number (813440).

Almost surely, 2^16942689 is an apocalyptic number.

It is an amenable number.

16942689 is a deficient number, since it is larger than the sum of its proper divisors (9087391).

16942689 is an frugal number, since it uses more digits than its factorization.

16942689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 191 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 16942689 is about 4116.1497786159. The cubic root of 16942689 is about 256.8388872458.

The spelling of 16942689 in words is "sixteen million, nine hundred forty-two thousand, six hundred eighty-nine".