16293939 has 8 divisors (see below), whose sum is σ = 23003280. Its totient is φ = 10223616.

The previous prime is 16293929. The next prime is 16293943. The reversal of 16293939 is 93939261.

It is a happy number.

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

It is not a de Polignac number, because 16293939 - 2⁹ = 16293427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16293939.

It is not an unprimeable number, because it can be changed into a prime (16293919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159694 + ... + 159795.

It is an arithmetic number, because the mean of its divisors is an integer number (2875410).

Almost surely, 2^16293939 is an apocalyptic number.

16293939 is a deficient number, since it is larger than the sum of its proper divisors (6709341).

16293939 is a wasteful number, since it uses less digits than its factorization.

16293939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319509.

The product of its digits is 78732, while the sum is 42.

The square root of 16293939 is about 4036.5751572342. The cubic root of 16293939 is about 253.5179388898.

The spelling of 16293939 in words is "sixteen million, two hundred ninety-three thousand, nine hundred thirty-nine".