8426139236 has 12 divisors (see below), whose sum is σ = 14747742828. Its totient is φ = 4212498432.

The previous prime is 8426139229. The next prime is 8426139287. The reversal of 8426139236 is 6329316248.

It can be written as a sum of positive squares in 2 ways, for example, as 1301766400 + 7124372836 = 36080^2 + 84406^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108701 + ... + 169316.

It is an arithmetic number, because the mean of its divisors is an integer number (1228978569).

Almost surely, 2^8426139236 is an apocalyptic number.

It is an amenable number.

8426139236 is a deficient number, since it is larger than the sum of its proper divisors (6321603592).

8426139236 is a wasteful number, since it uses less digits than its factorization.

8426139236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285598 (or 285596 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 8426139236 is about 91794.0043575832. The cubic root of 8426139236 is about 2034.8990877363.

The spelling of 8426139236 in words is "eight billion, four hundred twenty-six million, one hundred thirty-nine thousand, two hundred thirty-six".