839025641 has 2 divisors, whose sum is σ = 839025642. Its totient is φ = 839025640.

The previous prime is 839025601. The next prime is 839025643. The reversal of 839025641 is 146520938.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 838392025 + 633616 = 28955^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 839025641 - 2¹⁴ = 839009257 is a prime.

Together with 839025643, it forms a pair of twin primes.

It is a Chen prime.

839025641 is a modest number, since divided by 25641 gives 839 as remainder.

It is equal to p_43047884 and since 839025641 and 43047884 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 839025595 and 839025604.

It is not a weakly prime, because it can be changed into another prime (839025643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419512820 + 419512821.

It is an arithmetic number, because the mean of its divisors is an integer number (419512821).

Almost surely, 2^839025641 is an apocalyptic number.

It is an amenable number.

839025641 is a deficient number, since it is larger than the sum of its proper divisors (1).

839025641 is an equidigital number, since it uses as much as digits as its factorization.

839025641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 839025641 is about 28965.9393253525. The cubic root of 839025641 is about 943.1738352648.

The spelling of 839025641 in words is "eight hundred thirty-nine million, twenty-five thousand, six hundred forty-one".