869438 has 4 divisors (see below), whose sum is σ = 1304160. Its totient is φ = 434718.

The previous prime is 869437. The next prime is 869443. The reversal of 869438 is 834968.

869438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869438.

It is not an unprimeable number, because it can be changed into a prime (869437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217358 + ... + 217361.

It is an arithmetic number, because the mean of its divisors is an integer number (326040).

2⁸⁶⁹⁴³⁸ is an apocalyptic number.

869438 is a deficient number, since it is larger than the sum of its proper divisors (434722).

869438 is a wasteful number, since it uses less digits than its factorization.

869438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434721.

The product of its digits is 41472, while the sum is 38.

The square root of 869438 is about 932.4365930185. The cubic root of 869438 is about 95.4434668102.

The spelling of 869438 in words is "eight hundred sixty-nine thousand, four hundred thirty-eight".