400552443 has 6 divisors (see below), whose sum is σ = 578575764. Its totient is φ = 267034956.

The previous prime is 400552423. The next prime is 400552447. The reversal of 400552443 is 344255004.

It is not a de Polignac number, because 400552443 - 2¹⁰ = 400551419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400552447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22252905 + ... + 22252922.

It is an arithmetic number, because the mean of its divisors is an integer number (96429294).

Almost surely, 2^400552443 is an apocalyptic number.

400552443 is a deficient number, since it is larger than the sum of its proper divisors (178023321).

400552443 is a wasteful number, since it uses less digits than its factorization.

400552443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44505833 (or 44505830 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 400552443 is about 20013.8063096453. The cubic root of 400552443 is about 737.1453465914.

The spelling of 400552443 in words is "four hundred million, five hundred fifty-two thousand, four hundred forty-three".