400448884 has 24 divisors (see below), whose sum is σ = 767880288. Its totient is φ = 181215840.

The previous prime is 400448879. The next prime is 400448897. The reversal of 400448884 is 488844004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10059 + ... + 30034.

It is an arithmetic number, because the mean of its divisors is an integer number (31995012).

Almost surely, 2^400448884 is an apocalyptic number.

400448884 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

400448884 is a deficient number, since it is larger than the sum of its proper divisors (367431404).

400448884 is a wasteful number, since it uses less digits than its factorization.

400448884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40335 (or 40333 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The square root of 400448884 is about 20011.2189533771. The cubic root of 400448884 is about 737.0818138247.

The spelling of 400448884 in words is "four hundred million, four hundred forty-eight thousand, eight hundred eighty-four".