402422444440 has 16 divisors (see below), whose sum is σ = 905450500080. Its totient is φ = 160968977760.

The previous prime is 402422444429. The next prime is 402422444441. The reversal of 402422444440 is 44444224204.

It is a junction number, because it is equal to n+sod(n) for n = 402422444396 and 402422444405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402422444441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5030280516 + ... + 5030280595.

It is an arithmetic number, because the mean of its divisors is an integer number (56590656255).

Almost surely, 2^402422444440 is an apocalyptic number.

402422444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402422444440 is an abundant number, since it is smaller than the sum of its proper divisors (503028055640).

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

402422444440 is a wasteful number, since it uses less digits than its factorization.

402422444440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060561122 (or 10060561118 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 402422444440 its reverse (44444224204), we get a palindrome (446866668644).

The spelling of 402422444440 in words is "four hundred two billion, four hundred twenty-two million, four hundred forty-four thousand, four hundred forty".