838942722 has 18 divisors (see below), whose sum is σ = 1817975523. Its totient is φ = 279606612.

The previous prime is 838942717. The next prime is 838942751. The reversal of 838942722 is 227249838.

It can be written as a sum of positive squares in only one way, i.e., 419471361 + 419471361 = 20481^2 + 20481^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20481.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 119473 + ... + 126299.

Almost surely, 2^838942722 is an apocalyptic number.

838942722 is an abundant number, since it is smaller than the sum of its proper divisors (979032801).

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

838942722 is an frugal number, since it uses more digits than its factorization.

838942722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13662 (or 6832 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 838942722 is about 28964.5079709634. The cubic root of 838942722 is about 943.1427636646.

The spelling of 838942722 in words is "eight hundred thirty-eight million, nine hundred forty-two thousand, seven hundred twenty-two".