866486039 has 8 divisors (see below), whose sum is σ = 918136800. Its totient is φ = 814910976.

The previous prime is 866486021. The next prime is 866486057. The reversal of 866486039 is 930684668.

It is an interprime number because it is at equal distance from previous prime (866486021) and next prime (866486057).

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 866486039 - 2⁸ = 866485783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866486539) 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, 5567 + ... + 41999.

It is an arithmetic number, because the mean of its divisors is an integer number (114767100).

Almost surely, 2^866486039 is an apocalyptic number.

866486039 is a deficient number, since it is larger than the sum of its proper divisors (51650761).

866486039 is a wasteful number, since it uses less digits than its factorization.

866486039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37849.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 866486039 is about 29436.1349195169. The cubic root of 866486039 is about 953.3532612615.

The spelling of 866486039 in words is "eight hundred sixty-six million, four hundred eighty-six thousand, thirty-nine".