381394 has 8 divisors (see below), whose sum is σ = 616140. Its totient is φ = 176016.

The previous prime is 381389. The next prime is 381401. The reversal of 381394 is 493183.

It can be written as a sum of positive squares in 2 ways, for example, as 375769 + 5625 = 613^2 + 75^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×381394² = 290922766472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7309 + ... + 7360.

2³⁸¹³⁹⁴ is an apocalyptic number.

381394 is a deficient number, since it is larger than the sum of its proper divisors (234746).

381394 is a wasteful number, since it uses less digits than its factorization.

381394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14684.

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

The square root of 381394 is about 617.5710485442. The cubic root of 381394 is about 72.5200261761.

The spelling of 381394 in words is "three hundred eighty-one thousand, three hundred ninety-four".