16442899 has 8 divisors (see below), whose sum is σ = 18355392. Its totient is φ = 14600040.

The previous prime is 16442897. The next prime is 16442917. The reversal of 16442899 is 99824461.

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

It is a cyclic number.

It is not a de Polignac number, because 16442899 - 2¹ = 16442897 is a prime.

It is a super-3 number, since 3×16442899³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (16442897) 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, 16909 + ... + 17854.

It is an arithmetic number, because the mean of its divisors is an integer number (2294424).

Almost surely, 2^16442899 is an apocalyptic number.

16442899 is a deficient number, since it is larger than the sum of its proper divisors (1912493).

16442899 is a wasteful number, since it uses less digits than its factorization.

16442899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34817.

The product of its digits is 124416, while the sum is 43.

The square root of 16442899 is about 4054.9844635954. The cubic root of 16442899 is about 254.2881543853.

The spelling of 16442899 in words is "sixteen million, four hundred forty-two thousand, eight hundred ninety-nine".