839469 has 4 divisors (see below), whose sum is σ = 1119296. Its totient is φ = 559644.

The previous prime is 839459. The next prime is 839471. The reversal of 839469 is 964938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 839469 - 2⁴ = 839453 is a prime.

It is a super-2 number, since 2×839469² = 1409416403922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839429) 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, 139909 + ... + 139914.

It is an arithmetic number, because the mean of its divisors is an integer number (279824).

2⁸³⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

839469 is a deficient number, since it is larger than the sum of its proper divisors (279827).

839469 is a wasteful number, since it uses less digits than its factorization.

839469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279826.

The product of its digits is 46656, while the sum is 39.

The square root of 839469 is about 916.2254089469. The cubic root of 839469 is about 94.3339937052. Note that the first 3 decimals are identical.

The spelling of 839469 in words is "eight hundred thirty-nine thousand, four hundred sixty-nine".