839955746 has 12 divisors (see below), whose sum is σ = 1465637238. Its totient is φ = 359980992.

The previous prime is 839955731. The next prime is 839955749. The reversal of 839955746 is 647559938.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 773451721 + 66504025 = 27811^2 + 8155^2 .

It is a junction number, because it is equal to n+sod(n) for n = 839955691 and 839955700.

It is not an unprimeable number, because it can be changed into a prime (839955749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4285391 + ... + 4285586.

Almost surely, 2^839955746 is an apocalyptic number.

839955746 is a deficient number, since it is larger than the sum of its proper divisors (625681492).

839955746 is a wasteful number, since it uses less digits than its factorization.

839955746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570993 (or 8570986 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 56.

The square root of 839955746 is about 28981.9900282917. The cubic root of 839955746 is about 943.5222261827.

The spelling of 839955746 in words is "eight hundred thirty-nine million, nine hundred fifty-five thousand, seven hundred forty-six".