838427 has 4 divisors (see below), whose sum is σ = 849120. Its totient is φ = 827736.

The previous prime is 838421. The next prime is 838429. The reversal of 838427 is 724838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724838 = 2 ⋅362419.

It is a cyclic number.

It is not a de Polignac number, because 838427 - 2⁶ = 838363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838393 and 838402.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838427.

It is not an unprimeable number, because it can be changed into a prime (838421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5228 + ... + 5385.

It is an arithmetic number, because the mean of its divisors is an integer number (212280).

2⁸³⁸⁴²⁷ is an apocalyptic number.

838427 is a deficient number, since it is larger than the sum of its proper divisors (10693).

838427 is a wasteful number, since it uses less digits than its factorization.

838427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692.

The product of its digits is 10752, while the sum is 32.

The square root of 838427 is about 915.6565950180. The cubic root of 838427 is about 94.2949465139.

The spelling of 838427 in words is "eight hundred thirty-eight thousand, four hundred twenty-seven".