207939 has 4 divisors (see below), whose sum is σ = 277256. Its totient is φ = 138624.

The previous prime is 207931. The next prime is 207941. The reversal of 207939 is 939702.

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

It is not a de Polignac number, because 207939 - 2³ = 207931 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207931) 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, 34654 + ... + 34659.

It is an arithmetic number, because the mean of its divisors is an integer number (69314).

2²⁰⁷⁹³⁹ is an apocalyptic number.

207939 is a deficient number, since it is larger than the sum of its proper divisors (69317).

207939 is an equidigital number, since it uses as much as digits as its factorization.

207939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69316.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 207939 is about 456.0032894618. The cubic root of 207939 is about 59.2441287422.

It can be divided in two parts, 20793 and 9, that added together give a palindrome (20802).

The spelling of 207939 in words is "two hundred seven thousand, nine hundred thirty-nine".