838147812 has 12 divisors (see below), whose sum is σ = 1955678256. Its totient is φ = 279382600.

The previous prime is 838147733. The next prime is 838147819. The reversal of 838147812 is 218741838.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (838147819) 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, 34922814 + ... + 34922837.

It is an arithmetic number, because the mean of its divisors is an integer number (162973188).

Almost surely, 2^838147812 is an apocalyptic number.

It is an amenable number.

838147812 is an abundant number, since it is smaller than the sum of its proper divisors (1117530444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

838147812 is a wasteful number, since it uses less digits than its factorization.

838147812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69845658 (or 69845656 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 838147812 is about 28950.7825800962. The cubic root of 838147812 is about 942.8447891993.

The spelling of 838147812 in words is "eight hundred thirty-eight million, one hundred forty-seven thousand, eight hundred twelve".