69444 has 24 divisors (see below), whose sum is σ = 180320. Its totient is φ = 23112.

The previous prime is 69439. The next prime is 69457. The reversal of 69444 is 44496.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 13 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 69444.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 214 + ... + 429.

2⁶⁹⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

69444 is an abundant number, since it is smaller than the sum of its proper divisors (110876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90160).

69444 is a wasteful number, since it uses less digits than its factorization.

69444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 648 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 69444 is about 263.5222950720. The cubic root of 69444 is about 41.1034468844.

Adding to 69444 its product of digits (3456), we get a square (72900 = 270²).

The spelling of 69444 in words is "sixty-nine thousand, four hundred forty-four".