838889812 has 12 divisors (see below), whose sum is σ = 1492124116. Its totient is φ = 412568640.

The previous prime is 838889801. The next prime is 838889827. The reversal of 838889812 is 218988838.

It can be written as a sum of positive squares in 2 ways, for example, as 381186576 + 457703236 = 19524^2 + 21394^2 .

It is a super-3 number, since 3×838889812³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1718793 + ... + 1719280.

Almost surely, 2^838889812 is an apocalyptic number.

It is an amenable number.

838889812 is a deficient number, since it is larger than the sum of its proper divisors (653234304).

838889812 is a wasteful number, since it uses less digits than its factorization.

838889812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438138 (or 3438136 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 55.

The square root of 838889812 is about 28963.5945973562. The cubic root of 838889812 is about 943.1229360366.

The spelling of 838889812 in words is "eight hundred thirty-eight million, eight hundred eighty-nine thousand, eight hundred twelve".