239681443 has 2 divisors, whose sum is σ = 239681444. Its totient is φ = 239681442.

The previous prime is 239681401. The next prime is 239681503. The reversal of 239681443 is 344186932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239681443 - 2¹⁷ = 239550371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 239681396 and 239681405.

It is not a weakly prime, because it can be changed into another prime (239681843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119840721 + 119840722.

It is an arithmetic number, because the mean of its divisors is an integer number (119840722).

Almost surely, 2^239681443 is an apocalyptic number.

239681443 is a deficient number, since it is larger than the sum of its proper divisors (1).

239681443 is an equidigital number, since it uses as much as digits as its factorization.

239681443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 239681443 is about 15481.6485879250. The cubic root of 239681443 is about 621.1714264881.

The spelling of 239681443 in words is "two hundred thirty-nine million, six hundred eighty-one thousand, four hundred forty-three".