838940 has 12 divisors (see below), whose sum is σ = 1761816. Its totient is φ = 335568.

The previous prime is 838939. The next prime is 838949. The reversal of 838940 is 49838.

838940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 838897 and 838906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20954 + ... + 20993.

It is an arithmetic number, because the mean of its divisors is an integer number (146818).

2⁸³⁸⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

838940 is an abundant number, since it is smaller than the sum of its proper divisors (922876).

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

838940 is a wasteful number, since it uses less digits than its factorization.

838940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41956 (or 41954 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 838940 is about 915.9366790341. The cubic root of 838940 is about 94.3141743636.

The spelling of 838940 in words is "eight hundred thirty-eight thousand, nine hundred forty".