867649942 has 8 divisors (see below), whose sum is σ = 1311410232. Its totient is φ = 430513200.

The previous prime is 867649921. The next prime is 867649943. The reversal of 867649942 is 249946768.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867649943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655559 + ... + 1656082.

It is an arithmetic number, because the mean of its divisors is an integer number (163926279).

Almost surely, 2^867649942 is an apocalyptic number.

867649942 is a deficient number, since it is larger than the sum of its proper divisors (443760290).

867649942 is a wasteful number, since it uses less digits than its factorization.

867649942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311774.

The product of its digits is 5225472, while the sum is 55.

The square root of 867649942 is about 29455.8982548487. The cubic root of 867649942 is about 953.7799325965.

The spelling of 867649942 in words is "eight hundred sixty-seven million, six hundred forty-nine thousand, nine hundred forty-two".