8356844942 has 4 divisors (see below), whose sum is σ = 12535267416. Its totient is φ = 4178422470.

The previous prime is 8356844941. The next prime is 8356844959. The reversal of 8356844942 is 2494486538.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2494486538 = 2 ⋅1247243269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8356844941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2089211234 + ... + 2089211237.

It is an arithmetic number, because the mean of its divisors is an integer number (3133816854).

Almost surely, 2^8356844942 is an apocalyptic number.

8356844942 is a deficient number, since it is larger than the sum of its proper divisors (4178422474).

8356844942 is a wasteful number, since it uses less digits than its factorization.

8356844942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178422473.

The product of its digits is 6635520, while the sum is 53.

The square root of 8356844942 is about 91415.7805961312. The cubic root of 8356844942 is about 2029.3055728571.

The spelling of 8356844942 in words is "eight billion, three hundred fifty-six million, eight hundred forty-four thousand, nine hundred forty-two".