440069 has 8 divisors (see below), whose sum is σ = 513600. Its totient is φ = 376908.

The previous prime is 440047. The next prime is 440087. The reversal of 440069 is 960044.

440069 = 382² + 383² + 384².

It is not a de Polignac number, because 440069 - 2¹² = 435973 is a prime.

It is a super-2 number, since 2×440069² = 387321449522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (64200).

2⁴⁴⁰⁰⁶⁹ is an apocalyptic number.

440069 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

440069 is a deficient number, since it is larger than the sum of its proper divisors (73531).

440069 is an equidigital number, since it uses as much as digits as its factorization.

440069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 440069 is about 663.3769667391. The cubic root of 440069 is about 76.0630248214.

The spelling of 440069 in words is "four hundred forty thousand, sixty-nine".