16019939 has 8 divisors (see below), whose sum is σ = 17578512. Its totient is φ = 14508000.

The previous prime is 16019929. The next prime is 16019947. The reversal of 16019939 is 93991061.

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

It is a de Polignac number, because none of the positive numbers 2^k-16019939 is a prime.

It is a super-3 number, since 3×16019939³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16019909) 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, 10937 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (2197314).

Almost surely, 2^16019939 is an apocalyptic number.

16019939 is a deficient number, since it is larger than the sum of its proper divisors (1558573).

16019939 is a wasteful number, since it uses less digits than its factorization.

16019939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23317.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 16019939 is about 4002.4915989918. The cubic root of 16019939 is about 252.0888397191.

Adding to 16019939 its product of nonzero digits (13122), we get a palindrome (16033061).

The spelling of 16019939 in words is "sixteen million, nineteen thousand, nine hundred thirty-nine".