403225440 has 48 divisors (see below), whose sum is σ = 1270161648. Its totient is φ = 107526656.

The previous prime is 403225421. The next prime is 403225441. The reversal of 403225440 is 44522304.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 403225440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403225441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419547 + ... + 420506.

It is an arithmetic number, because the mean of its divisors is an integer number (26461701).

Almost surely, 2^403225440 is an apocalyptic number.

403225440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403225440 is an abundant number, since it is smaller than the sum of its proper divisors (866936208).

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

403225440 is a wasteful number, since it uses less digits than its factorization.

403225440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840071 (or 840063 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 403225440 is about 20080.4740979888. The cubic root of 403225440 is about 738.7814373892.

Adding to 403225440 its reverse (44522304), we get a palindrome (447747744).

The spelling of 403225440 in words is "four hundred three million, two hundred twenty-five thousand, four hundred forty".