16389849 has 8 divisors (see below), whose sum is σ = 24975040. Its totient is φ = 9365616.

The previous prime is 16389833. The next prime is 16389883. The reversal of 16389849 is 94898361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16389849 - 2⁴ = 16389833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16389798 and 16389807.

It is not an unprimeable number, because it can be changed into a prime (16389889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390214 + ... + 390255.

It is an arithmetic number, because the mean of its divisors is an integer number (3121880).

Almost surely, 2^16389849 is an apocalyptic number.

It is an amenable number.

16389849 is a deficient number, since it is larger than the sum of its proper divisors (8585191).

16389849 is an equidigital number, since it uses as much as digits as its factorization.

16389849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780479.

The product of its digits is 373248, while the sum is 48.

The square root of 16389849 is about 4048.4378468738. The cubic root of 16389849 is about 254.0143883804.

The spelling of 16389849 in words is "sixteen million, three hundred eighty-nine thousand, eight hundred forty-nine".