299487 has 4 divisors (see below), whose sum is σ = 399320. Its totient is φ = 199656.

The previous prime is 299479. The next prime is 299501. The reversal of 299487 is 784992.

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

It is not a de Polignac number, because 299487 - 2³ = 299479 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

299487 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 299487.

It is not an unprimeable number, because it can be changed into a prime (299417) 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 3 ways as a sum of consecutive naturals, for example, 49912 + ... + 49917.

It is an arithmetic number, because the mean of its divisors is an integer number (99830).

2²⁹⁹⁴⁸⁷ is an apocalyptic number.

299487 is a deficient number, since it is larger than the sum of its proper divisors (99833).

299487 is an equidigital number, since it uses as much as digits as its factorization.

299487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99832.

The product of its digits is 36288, while the sum is 39.

The square root of 299487 is about 547.2540543477. The cubic root of 299487 is about 66.9051155595.

It can be divided in two parts, 2994 and 87, that added together give a triangular number (3081 = T₇₈).

The spelling of 299487 in words is "two hundred ninety-nine thousand, four hundred eighty-seven".