862868239 has 2 divisors, whose sum is σ = 862868240. Its totient is φ = 862868238.

The previous prime is 862868213. The next prime is 862868273. The reversal of 862868239 is 932868268.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 862868239 - 2¹⁵ = 862835471 is a prime.

It is a super-2 number, since 2×862868239² = 1489083195749922242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862868939) 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, 431434119 + 431434120.

It is an arithmetic number, because the mean of its divisors is an integer number (431434120).

Almost surely, 2^862868239 is an apocalyptic number.

862868239 is a deficient number, since it is larger than the sum of its proper divisors (1).

862868239 is an equidigital number, since it uses as much as digits as its factorization.

862868239 is an odious number, because the sum of its binary digits is odd.

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

The square root of 862868239 is about 29374.6189592308. The cubic root of 862868239 is about 952.0245794180.

It can be divided in two parts, 8628 and 68239, that added together give a palindrome (76867).

The spelling of 862868239 in words is "eight hundred sixty-two million, eight hundred sixty-eight thousand, two hundred thirty-nine".