838238711 has 4 divisors (see below), whose sum is σ = 838305624. Its totient is φ = 838171800.

The previous prime is 838238677. The next prime is 838238761. The reversal of 838238711 is 117832838.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 838238711 - 2¹⁸ = 837976567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838238761) 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, 8420 + ... + 41801.

It is an arithmetic number, because the mean of its divisors is an integer number (209576406).

Almost surely, 2^838238711 is an apocalyptic number.

838238711 is a deficient number, since it is larger than the sum of its proper divisors (66913).

838238711 is a wasteful number, since it uses less digits than its factorization.

838238711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66912.

The product of its digits is 64512, while the sum is 41.

The square root of 838238711 is about 28952.3524260119. The cubic root of 838238711 is about 942.8788725074.

The spelling of 838238711 in words is "eight hundred thirty-eight million, two hundred thirty-eight thousand, seven hundred eleven".