440421400 has 48 divisors (see below), whose sum is σ = 1025369640. Its totient is φ = 175929600.

The previous prime is 440421383. The next prime is 440421439. The reversal of 440421400 is 4124044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263367 + ... + 265033.

Almost surely, 2^440421400 is an apocalyptic number.

440421400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440421400 is an abundant number, since it is smaller than the sum of its proper divisors (584948240).

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

440421400 is a wasteful number, since it uses less digits than its factorization.

440421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004 (or 2995 counting only the distinct ones).

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

The square root of 440421400 is about 20986.2192879041. The cubic root of 440421400 is about 760.8332274299.

Adding to 440421400 its reverse (4124044), we get a palindrome (444545444).

The spelling of 440421400 in words is "four hundred forty million, four hundred twenty-one thousand, four hundred".