440081447 has 4 divisors (see below), whose sum is σ = 473933880. Its totient is φ = 406229016.

The previous prime is 440081407. The next prime is 440081459. The reversal of 440081447 is 744180044.

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

It is a cyclic number.

It is not a de Polignac number, because 440081447 - 2²² = 435887143 is a prime.

It is a super-2 number, since 2×440081447² = 387343359987227618, 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 (440081407) 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, 16926197 + ... + 16926222.

It is an arithmetic number, because the mean of its divisors is an integer number (118483470).

Almost surely, 2^440081447 is an apocalyptic number.

440081447 is a deficient number, since it is larger than the sum of its proper divisors (33852433).

440081447 is a wasteful number, since it uses less digits than its factorization.

440081447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33852432.

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 440081447 is about 20978.1182902566. The cubic root of 440081447 is about 760.6374194189.

The spelling of 440081447 in words is "four hundred forty million, eighty-one thousand, four hundred forty-seven".