440221532 has 6 divisors (see below), whose sum is σ = 770387688. Its totient is φ = 220110764.

The previous prime is 440221531. The next prime is 440221547. The reversal of 440221532 is 235122044.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 440221498 and 440221507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440221531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55027688 + ... + 55027695.

It is an arithmetic number, because the mean of its divisors is an integer number (128397948).

Almost surely, 2^440221532 is an apocalyptic number.

It is an amenable number.

440221532 is a deficient number, since it is larger than the sum of its proper divisors (330166156).

440221532 is a wasteful number, since it uses less digits than its factorization.

440221532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110055387 (or 110055385 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 440221532 is about 20981.4568607616. The cubic root of 440221532 is about 760.7181185634.

Adding to 440221532 its reverse (235122044), we get a palindrome (675343576).

It can be divided in two parts, 44022 and 1532, that added together give a palindrome (45554).

The spelling of 440221532 in words is "four hundred forty million, two hundred twenty-one thousand, five hundred thirty-two".