16389799 has 8 divisors (see below), whose sum is σ = 17432240. Its totient is φ = 15365376.

The previous prime is 16389797. The next prime is 16389811. The reversal of 16389799 is 99798361.

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

It is not a de Polignac number, because 16389799 - 2¹ = 16389797 is a prime.

It is a super-2 number, since 2×16389799² = 537251022520802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389797) 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, 2604 + ... + 6289.

It is an arithmetic number, because the mean of its divisors is an integer number (2179030).

Almost surely, 2^16389799 is an apocalyptic number.

16389799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16389799 is a deficient number, since it is larger than the sum of its proper divisors (1042441).

16389799 is an equidigital number, since it uses as much as digits as its factorization.

16389799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009.

The product of its digits is 734832, while the sum is 52.

The square root of 16389799 is about 4048.4316716477. The cubic root of 16389799 is about 254.0141300755.

The spelling of 16389799 in words is "sixteen million, three hundred eighty-nine thousand, seven hundred ninety-nine".