838139000 has 32 divisors (see below), whose sum is σ = 1961247600. Its totient is φ = 335255200.

The previous prime is 838138997. The next prime is 838139051. The reversal of 838139000 is 931838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418070 + ... + 420069.

Almost surely, 2^838139000 is an apocalyptic number.

It is an amenable number.

838139000 is an abundant number, since it is smaller than the sum of its proper divisors (1123108600).

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

838139000 is a wasteful number, since it uses less digits than its factorization.

838139000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838160 (or 838146 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 838139000 is about 28950.6303903732. The cubic root of 838139000 is about 942.8414849383.

The spelling of 838139000 in words is "eight hundred thirty-eight million, one hundred thirty-nine thousand".