868262839 has 2 divisors, whose sum is σ = 868262840. Its totient is φ = 868262838.

The previous prime is 868262827. The next prime is 868262869. The reversal of 868262839 is 938262868.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868262839 - 2⁹ = 868262327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868262809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434131419 + 434131420.

It is an arithmetic number, because the mean of its divisors is an integer number (434131420).

Almost surely, 2^868262839 is an apocalyptic number.

868262839 is a deficient number, since it is larger than the sum of its proper divisors (1).

868262839 is an equidigital number, since it uses as much as digits as its factorization.

868262839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 52.

The square root of 868262839 is about 29466.3000561659. The cubic root of 868262839 is about 954.0044591177.

The spelling of 868262839 in words is "eight hundred sixty-eight million, two hundred sixty-two thousand, eight hundred thirty-nine".