403223440 has 40 divisors (see below), whose sum is σ = 939281400. Its totient is φ = 160982016.

The previous prime is 403223407. The next prime is 403223449. The reversal of 403223440 is 44322304.

It can be written as a sum of positive squares in 4 ways, for example, as 26708224 + 376515216 = 5168^2 + 19404^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (403223449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40036 + ... + 49084.

It is an arithmetic number, because the mean of its divisors is an integer number (23482035).

Almost surely, 2^403223440 is an apocalyptic number.

403223440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403223440 is an abundant number, since it is smaller than the sum of its proper divisors (536057960).

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

403223440 is a wasteful number, since it uses less digits than its factorization.

403223440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9619 (or 9613 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 403223440 is about 20080.4242983060. The cubic root of 403223440 is about 738.7802159340.

Adding to 403223440 its reverse (44322304), we get a palindrome (447545744).

It can be divided in two parts, 4032 and 23440, that added together give a palindrome (27472).

The spelling of 403223440 in words is "four hundred three million, two hundred twenty-three thousand, four hundred forty".