381349 has 4 divisors (see below), whose sum is σ = 401440. Its totient is φ = 361260.

The previous prime is 381347. The next prime is 381371. The reversal of 381349 is 943183.

381349 = T₈₆ + T₈₇ + ... + T₁₄₂.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381349 - 2¹ = 381347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381343) 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, 10017 + ... + 10054.

It is an arithmetic number, because the mean of its divisors is an integer number (100360).

2³⁸¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

381349 is a deficient number, since it is larger than the sum of its proper divisors (20091).

381349 is a wasteful number, since it uses less digits than its factorization.

381349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20090.

The product of its digits is 2592, while the sum is 28.

The square root of 381349 is about 617.5346144144. The cubic root of 381349 is about 72.5171738942.

It can be divided in two parts, 38134 and 9, that multiplied together give a triangular number (343206 = T₈₂₈).

The spelling of 381349 in words is "three hundred eighty-one thousand, three hundred forty-nine".