299139 has 4 divisors (see below), whose sum is σ = 398856. Its totient is φ = 199424.

The previous prime is 299137. The next prime is 299147. The reversal of 299139 is 931992.

299139 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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 299139 - 2¹ = 299137 is a prime.

It is a D-number.

299139 is strictly pandigital in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 299139.

It is not an unprimeable number, because it can be changed into a prime (299137) 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, 49854 + ... + 49859.

It is an arithmetic number, because the mean of its divisors is an integer number (99714).

2²⁹⁹¹³⁹ is an apocalyptic number.

299139 is a deficient number, since it is larger than the sum of its proper divisors (99717).

299139 is an equidigital number, since it uses as much as digits as its factorization.

299139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99716.

The product of its digits is 4374, while the sum is 33.

The square root of 299139 is about 546.9360108824. The cubic root of 299139 is about 66.8791912242.

The spelling of 299139 in words is "two hundred ninety-nine thousand, one hundred thirty-nine".