868129443 has 24 divisors (see below), whose sum is σ = 1263768480. Its totient is φ = 574248960.

The previous prime is 868129439. The next prime is 868129447. The reversal of 868129443 is 344921868.

It is a happy number.

868129443 is a `hidden beast` number, since 86 + 8 + 129 + 443 = 666.

It is an interprime number because it is at equal distance from previous prime (868129439) and next prime (868129447).

It is not a de Polignac number, because 868129443 - 2² = 868129439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868129447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752355 + ... + 753507.

It is an arithmetic number, because the mean of its divisors is an integer number (52657020).

Almost surely, 2^868129443 is an apocalyptic number.

868129443 is a deficient number, since it is larger than the sum of its proper divisors (395639037).

868129443 is a wasteful number, since it uses less digits than its factorization.

868129443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1736 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 868129443 is about 29464.0364342702. The cubic root of 868129443 is about 953.9556002964.

The spelling of 868129443 in words is "eight hundred sixty-eight million, one hundred twenty-nine thousand, four hundred forty-three".