869444 has 6 divisors (see below), whose sum is σ = 1521534. Its totient is φ = 434720.

The previous prime is 869443. The next prime is 869461. The reversal of 869444 is 444968.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 407044 = 680^2 + 638^2 .

It is an Ulam number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (869443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108677 + ... + 108684.

It is an arithmetic number, because the mean of its divisors is an integer number (253589).

2⁸⁶⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

869444 is a deficient number, since it is larger than the sum of its proper divisors (652090).

869444 is a wasteful number, since it uses less digits than its factorization.

869444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217365 (or 217363 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 869444 is about 932.4398103899. The cubic root of 869444 is about 95.4436863618.

The spelling of 869444 in words is "eight hundred sixty-nine thousand, four hundred forty-four".