866224129 has 8 divisors (see below), whose sum is σ = 877889792. Its totient is φ = 854621280.

The previous prime is 866224111. The next prime is 866224133. The reversal of 866224129 is 921422668.

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

It is a cyclic number.

It is not a de Polignac number, because 866224129 - 2²⁹ = 329353217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 866224091 and 866224100.

It is not an unprimeable number, because it can be changed into a prime (866224109) 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, 12397 + ... + 43429.

It is an arithmetic number, because the mean of its divisors is an integer number (109736224).

Almost surely, 2^866224129 is an apocalyptic number.

It is an amenable number.

866224129 is a deficient number, since it is larger than the sum of its proper divisors (11665663).

866224129 is a wasteful number, since it uses less digits than its factorization.

866224129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31407.

The product of its digits is 82944, while the sum is 40.

The square root of 866224129 is about 29431.6857994917. The cubic root of 866224129 is about 953.2571958881.

The spelling of 866224129 in words is "eight hundred sixty-six million, two hundred twenty-four thousand, one hundred twenty-nine".