440213240 has 32 divisors (see below), whose sum is σ = 991403280. Its totient is φ = 175921152.

The previous prime is 440213227. The next prime is 440213303. The reversal of 440213240 is 42312044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44159 + ... + 53201.

Almost surely, 2^440213240 is an apocalyptic number.

440213240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440213240 is an abundant number, since it is smaller than the sum of its proper divisors (551190040).

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

440213240 is a wasteful number, since it uses less digits than its factorization.

440213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271 (or 10267 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 440213240 is about 20981.2592567748. The cubic root of 440213240 is about 760.7133422453.

Adding to 440213240 its reverse (42312044), we get a palindrome (482525284).

The spelling of 440213240 in words is "four hundred forty million, two hundred thirteen thousand, two hundred forty".