339581 has 4 divisors (see below), whose sum is σ = 370464. Its totient is φ = 308700.

The previous prime is 339557. The next prime is 339583. The reversal of 339581 is 185933.

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, and also an emirpimes, since its reverse is a distinct semiprime: 185933 = 11 ⋅16903.

It is a cyclic number.

It is not a de Polignac number, because 339581 - 2⁶ = 339517 is a prime.

It is a super-2 number, since 2×339581² = 230630511122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339581.

It is not an unprimeable number, because it can be changed into a prime (339583) 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, 15425 + ... + 15446.

It is an arithmetic number, because the mean of its divisors is an integer number (92616).

2³³⁹⁵⁸¹ is an apocalyptic number.

It is an amenable number.

339581 is a deficient number, since it is larger than the sum of its proper divisors (30883).

339581 is a wasteful number, since it uses less digits than its factorization.

339581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30882.

The product of its digits is 3240, while the sum is 29.

The square root of 339581 is about 582.7357891875. The cubic root of 339581 is about 69.7666378607.

The spelling of 339581 in words is "three hundred thirty-nine thousand, five hundred eighty-one".