838826109 has 24 divisors (see below), whose sum is σ = 1334889504. Its totient is φ = 503340000.

The previous prime is 838826101. The next prime is 838826111. The reversal of 838826109 is 901628838.

838826109 is a `hidden beast` number, since 8 + 388 + 261 + 0 + 9 = 666.

It is not a de Polignac number, because 838826109 - 2³ = 838826101 is a prime.

It is a super-2 number, since 2×838826109² = 1407258482280159762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838826101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31947 + ... + 51944.

It is an arithmetic number, because the mean of its divisors is an integer number (55620396).

Almost surely, 2^838826109 is an apocalyptic number.

It is an amenable number.

838826109 is a deficient number, since it is larger than the sum of its proper divisors (496063395).

838826109 is a wasteful number, since it uses less digits than its factorization.

838826109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84009 (or 84006 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 838826109 is about 28962.4948683638. The cubic root of 838826109 is about 943.0990627060.

The spelling of 838826109 in words is "eight hundred thirty-eight million, eight hundred twenty-six thousand, one hundred nine".