440221240 has 16 divisors (see below), whose sum is σ = 990497880. Its totient is φ = 176088480.

The previous prime is 440221217. The next prime is 440221261. The reversal of 440221240 is 42122044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502726 + ... + 5502805.

Almost surely, 2^440221240 is an apocalyptic number.

440221240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440221240 is an abundant number, since it is smaller than the sum of its proper divisors (550276640).

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

440221240 is a wasteful number, since it uses less digits than its factorization.

440221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005542 (or 11005538 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 440221240 is about 20981.4499022351. The cubic root of 440221240 is about 760.7179503680.

Adding to 440221240 its reverse (42122044), we get a palindrome (482343284).

The spelling of 440221240 in words is "four hundred forty million, two hundred twenty-one thousand, two hundred forty".