838669 has 4 divisors (see below), whose sum is σ = 903196. Its totient is φ = 774144.

The previous prime is 838667. The next prime is 838687. The reversal of 838669 is 966838.

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

It can be written as a sum of positive squares in 2 ways, for example, as 149769 + 688900 = 387^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 838669 - 2¹ = 838667 is a prime.

It is a super-2 number, since 2×838669² = 1406731383122, which contains 22 as substring.

It is a Duffinian number.

838669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838667) 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, 32244 + ... + 32269.

It is an arithmetic number, because the mean of its divisors is an integer number (225799).

2⁸³⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

838669 is a deficient number, since it is larger than the sum of its proper divisors (64527).

838669 is a wasteful number, since it uses less digits than its factorization.

838669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64526.

The product of its digits is 62208, while the sum is 40.

The square root of 838669 is about 915.7887310947. The cubic root of 838669 is about 94.3040179385.

The spelling of 838669 in words is "eight hundred thirty-eight thousand, six hundred sixty-nine".