866839342 has 16 divisors (see below), whose sum is σ = 1305512640. Its totient is φ = 431673088.

The previous prime is 866839339. The next prime is 866839349. The reversal of 866839342 is 243938668.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866839349) 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, 886758 + ... + 887734.

It is an arithmetic number, because the mean of its divisors is an integer number (81594540).

Almost surely, 2^866839342 is an apocalyptic number.

866839342 is a deficient number, since it is larger than the sum of its proper divisors (438673298).

866839342 is a wasteful number, since it uses less digits than its factorization.

866839342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its digits is 1492992, while the sum is 49.

The square root of 866839342 is about 29442.1354864079. The cubic root of 866839342 is about 953.4828178012.

The spelling of 866839342 in words is "eight hundred sixty-six million, eight hundred thirty-nine thousand, three hundred forty-two".