381083839 has 4 divisors (see below), whose sum is σ = 381544360. Its totient is φ = 380623320.

The previous prime is 381083821. The next prime is 381083861. The reversal of 381083839 is 938380183.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938380183 = 13 ⋅72183091.

It is a cyclic number.

It is not a de Polignac number, because 381083839 - 2⁹ = 381083327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381083795 and 381083804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381083819) 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, 229017 + ... + 230674.

It is an arithmetic number, because the mean of its divisors is an integer number (95386090).

Almost surely, 2^381083839 is an apocalyptic number.

381083839 is a deficient number, since it is larger than the sum of its proper divisors (460521).

381083839 is an equidigital number, since it uses as much as digits as its factorization.

381083839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460520.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 381083839 is about 19521.3687788536. The cubic root of 381083839 is about 725.0036236046.

The spelling of 381083839 in words is "three hundred eighty-one million, eighty-three thousand, eight hundred thirty-nine".