16287939 has 8 divisors (see below), whose sum is σ = 24130320. Its totient is φ = 10858608.

The previous prime is 16287923. The next prime is 16287941. The reversal of 16287939 is 93978261.

It is not a de Polignac number, because 16287939 - 2⁴ = 16287923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16287894 and 16287903.

It is not an unprimeable number, because it can be changed into a prime (16287919) 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, 301602 + ... + 301655.

It is an arithmetic number, because the mean of its divisors is an integer number (3016290).

Almost surely, 2^16287939 is an apocalyptic number.

16287939 is a deficient number, since it is larger than the sum of its proper divisors (7842381).

16287939 is an equidigital number, since it uses as much as digits as its factorization.

16287939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603266 (or 603260 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 16287939 is about 4035.8318845066. The cubic root of 16287939 is about 253.4868170029.

The spelling of 16287939 in words is "sixteen million, two hundred eighty-seven thousand, nine hundred thirty-nine".