838402 has 4 divisors (see below), whose sum is σ = 1257606. Its totient is φ = 419200.

The previous prime is 838399. The next prime is 838403. The reversal of 838402 is 204838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 44521 = 891^2 + 211^2 .

It is not an unprimeable number, because it can be changed into a prime (838403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209599 + ... + 209602.

2⁸³⁸⁴⁰² is an apocalyptic number.

838402 is a deficient number, since it is larger than the sum of its proper divisors (419204).

838402 is a wasteful number, since it uses less digits than its factorization.

838402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419203.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 838402 is about 915.6429435102. The cubic root of 838402 is about 94.2940092838.

Adding to 838402 its product of nonzero digits (1536), we get a palindrome (839938).

The spelling of 838402 in words is "eight hundred thirty-eight thousand, four hundred two".