860438069 has 2 divisors, whose sum is σ = 860438070. Its totient is φ = 860438068.

The previous prime is 860438023. The next prime is 860438087. The reversal of 860438069 is 960834068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 765628900 + 94809169 = 27670^2 + 9737^2 .

It is a cyclic number.

It is not a de Polignac number, because 860438069 - 2²⁸ = 592002613 is a prime.

It is a super-2 number, since 2×860438069² = 1480707341168897522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860438099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430219034 + 430219035.

It is an arithmetic number, because the mean of its divisors is an integer number (430219035).

Almost surely, 2^860438069 is an apocalyptic number.

It is an amenable number.

860438069 is a deficient number, since it is larger than the sum of its proper divisors (1).

860438069 is an equidigital number, since it uses as much as digits as its factorization.

860438069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 860438069 is about 29333.2246607835. The cubic root of 860438069 is about 951.1299828265.

The spelling of 860438069 in words is "eight hundred sixty million, four hundred thirty-eight thousand, sixty-nine".