381299 has 4 divisors (see below), whose sum is σ = 382536. Its totient is φ = 380064.

The previous prime is 381289. The next prime is 381301. The reversal of 381299 is 992183.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381209) 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, 272 + ... + 914.

It is an arithmetic number, because the mean of its divisors is an integer number (95634).

2³⁸¹²⁹⁹ is an apocalyptic number.

381299 is a deficient number, since it is larger than the sum of its proper divisors (1237).

381299 is an equidigital number, since it uses as much as digits as its factorization.

381299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 3888, while the sum is 32.

The square root of 381299 is about 617.4941295268. The cubic root of 381299 is about 72.5140044290.

The spelling of 381299 in words is "three hundred eighty-one thousand, two hundred ninety-nine".