16798489 has 4 divisors (see below), whose sum is σ = 17682640. Its totient is φ = 15914340.

The previous prime is 16798459. The next prime is 16798501. The reversal of 16798489 is 98489761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16798489 - 2¹¹ = 16796441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16798459) 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, 442047 + ... + 442084.

It is an arithmetic number, because the mean of its divisors is an integer number (4420660).

Almost surely, 2^16798489 is an apocalyptic number.

16798489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16798489 is a deficient number, since it is larger than the sum of its proper divisors (884151).

16798489 is an equidigital number, since it uses as much as digits as its factorization.

16798489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884150.

The product of its digits is 870912, while the sum is 52.

The square root of 16798489 is about 4098.5959791128. The cubic root of 16798489 is about 256.1081543740.

The spelling of 16798489 in words is "sixteen million, seven hundred ninety-eight thousand, four hundred eighty-nine".