858721229979 has 8 divisors (see below), whose sum is σ = 1145442120192. Its totient is φ = 572240579880.

The previous prime is 858721229941. The next prime is 858721230007. The reversal of 858721229979 is 979922127858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 858721229979 - 2¹⁶ = 858721164443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (858721224979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60051687 + ... + 60065984.

It is an arithmetic number, because the mean of its divisors is an integer number (143180265024).

Almost surely, 2^858721229979 is an apocalyptic number.

858721229979 is a deficient number, since it is larger than the sum of its proper divisors (286720890213).

858721229979 is a wasteful number, since it uses less digits than its factorization.

858721229979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120120057.

The product of its digits is 91445760, while the sum is 69.

The spelling of 858721229979 in words is "eight hundred fifty-eight billion, seven hundred twenty-one million, two hundred twenty-nine thousand, nine hundred seventy-nine".