241857839 has 2 divisors, whose sum is σ = 241857840. Its totient is φ = 241857838.

The previous prime is 241857829. The next prime is 241857851. The reversal of 241857839 is 938758142.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-241857839 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 241857793 and 241857802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241857809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120928919 + 120928920.

It is an arithmetic number, because the mean of its divisors is an integer number (120928920).

Almost surely, 2^241857839 is an apocalyptic number.

241857839 is a deficient number, since it is larger than the sum of its proper divisors (1).

241857839 is an equidigital number, since it uses as much as digits as its factorization.

241857839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 241857839 is about 15551.7792872713. The cubic root of 241857839 is about 623.0459194915.

The spelling of 241857839 in words is "two hundred forty-one million, eight hundred fifty-seven thousand, eight hundred thirty-nine".