16280939 has 4 divisors (see below), whose sum is σ = 16510320. Its totient is φ = 16051560.

The previous prime is 16280903. The next prime is 16280959. The reversal of 16280939 is 93908261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16280939 - 2⁸ = 16280683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16280959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114584 + ... + 114725.

It is an arithmetic number, because the mean of its divisors is an integer number (4127580).

Almost surely, 2^16280939 is an apocalyptic number.

16280939 is a deficient number, since it is larger than the sum of its proper divisors (229381).

16280939 is an equidigital number, since it uses as much as digits as its factorization.

16280939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229380.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 16280939 is about 4034.9645599435. The cubic root of 16280939 is about 253.4504984735.

The spelling of 16280939 in words is "sixteen million, two hundred eighty thousand, nine hundred thirty-nine".