440420408 has 8 divisors (see below), whose sum is σ = 825788280. Its totient is φ = 220210200.

The previous prime is 440420369. The next prime is 440420443. The reversal of 440420408 is 804024044.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27526268 + ... + 27526283.

It is an arithmetic number, because the mean of its divisors is an integer number (103223535).

Almost surely, 2^440420408 is an apocalyptic number.

It is an amenable number.

440420408 is a deficient number, since it is larger than the sum of its proper divisors (385367872).

440420408 is a wasteful number, since it uses less digits than its factorization.

440420408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55052557 (or 55052553 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 440420408 is about 20986.1956533336. The cubic root of 440420408 is about 760.8326561989.

The spelling of 440420408 in words is "four hundred forty million, four hundred twenty thousand, four hundred eight".