838214421 has 32 divisors (see below), whose sum is σ = 1241991168. Its totient is φ = 498579840.

The previous prime is 838214413. The next prime is 838214423. The reversal of 838214421 is 124412838.

838214421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 838214421 - 2³ = 838214413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838214423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810921 + ... + 811953.

It is an arithmetic number, because the mean of its divisors is an integer number (38812224).

Almost surely, 2^838214421 is an apocalyptic number.

It is an amenable number.

838214421 is a deficient number, since it is larger than the sum of its proper divisors (403776747).

838214421 is a wasteful number, since it uses less digits than its factorization.

838214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481.

The product of its digits is 12288, while the sum is 33.

The square root of 838214421 is about 28951.9329406518. The cubic root of 838214421 is about 942.8697650186.

The spelling of 838214421 in words is "eight hundred thirty-eight million, two hundred fourteen thousand, four hundred twenty-one".