381589 has 8 divisors (see below), whose sum is σ = 415800. Its totient is φ = 348096.

The previous prime is 381569. The next prime is 381607. The reversal of 381589 is 985183.

It can be written as a sum of positive squares in 4 ways, for example, as 33489 + 348100 = 183^2 + 590^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 381589 - 2⁷ = 381461 is a prime.

It is a super-2 number, since 2×381589² = 291220329842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2³⁸¹⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

381589 is a deficient number, since it is larger than the sum of its proper divisors (34211).

381589 is a wasteful number, since it uses less digits than its factorization.

381589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 8640, while the sum is 34.

The square root of 381589 is about 617.7289049413. The cubic root of 381589 is about 72.5323834721.

The spelling of 381589 in words is "three hundred eighty-one thousand, five hundred eighty-nine".