402044322440 has 32 divisors (see below), whose sum is σ = 923846532480. Its totient is φ = 157396074432.

The previous prime is 402044322377. The next prime is 402044322479. The reversal of 402044322440 is 44223440204.

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, 106924802 + ... + 106928561.

It is an arithmetic number, because the mean of its divisors is an integer number (28870204140).

Almost surely, 2^402044322440 is an apocalyptic number.

402044322440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402044322440 is an abundant number, since it is smaller than the sum of its proper divisors (521802210040).

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

402044322440 is a wasteful number, since it uses less digits than its factorization.

402044322440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213853421 (or 213853417 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 402044322440 its reverse (44223440204), we get a palindrome (446267762644).

The spelling of 402044322440 in words is "four hundred two billion, forty-four million, three hundred twenty-two thousand, four hundred forty".