381379 has 4 divisors (see below), whose sum is σ = 394560. Its totient is φ = 368200.

The previous prime is 381377. The next prime is 381383. The reversal of 381379 is 973183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973183 = 31 ⋅31393.

It is a cyclic number.

It is not a de Polignac number, because 381379 - 2¹ = 381377 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381379.

It is not an unprimeable number, because it can be changed into a prime (381371) 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, 6547 + ... + 6604.

It is an arithmetic number, because the mean of its divisors is an integer number (98640).

2³⁸¹³⁷⁹ is an apocalyptic number.

381379 is a deficient number, since it is larger than the sum of its proper divisors (13181).

381379 is a wasteful number, since it uses less digits than its factorization.

381379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13180.

The product of its digits is 4536, while the sum is 31.

The square root of 381379 is about 617.5589040731. The cubic root of 381379 is about 72.5190754404.

The spelling of 381379 in words is "three hundred eighty-one thousand, three hundred seventy-nine".