838634 has 4 divisors (see below), whose sum is σ = 1257954. Its totient is φ = 419316.

The previous prime is 838633. The next prime is 838657. The reversal of 838634 is 436838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436838 = 2 ⋅218419.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 124609 = 845^2 + 353^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 838634.

It is not an unprimeable number, because it can be changed into a prime (838631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209657 + ... + 209660.

2⁸³⁸⁶³⁴ is an apocalyptic number.

838634 is a deficient number, since it is larger than the sum of its proper divisors (419320).

838634 is a wasteful number, since it uses less digits than its factorization.

838634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419319.

The product of its digits is 13824, while the sum is 32.

The square root of 838634 is about 915.7696216844. The cubic root of 838634 is about 94.3027060635.

The spelling of 838634 in words is "eight hundred thirty-eight thousand, six hundred thirty-four".