239641 has 2 divisors, whose sum is σ = 239642. Its totient is φ = 239640.

The previous prime is 239633. The next prime is 239671. The reversal of 239641 is 146932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198025 + 41616 = 445^2 + 204^2 .

It is a cyclic number.

It is not a de Polignac number, because 239641 - 2³ = 239633 is a prime.

It is not a weakly prime, because it can be changed into another prime (239611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119820 + 119821.

It is an arithmetic number, because the mean of its divisors is an integer number (119821).

2²³⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

239641 is a deficient number, since it is larger than the sum of its proper divisors (1).

239641 is an equidigital number, since it uses as much as digits as its factorization.

239641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 239641 is about 489.5314085940. The cubic root of 239641 is about 62.1136486432.

The spelling of 239641 in words is "two hundred thirty-nine thousand, six hundred forty-one".