402040402444 has 24 divisors (see below), whose sum is σ = 715648626000. Its totient is φ = 197598004800.

The previous prime is 402040402411. The next prime is 402040402453. The reversal of 402040402444 is 444204040204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523519 + ... + 3635830.

It is an arithmetic number, because the mean of its divisors is an integer number (29818692750).

Almost surely, 2^402040402444 is an apocalyptic number.

It is an amenable number.

402040402444 is a deficient number, since it is larger than the sum of its proper divisors (313608223556).

402040402444 is a wasteful number, since it uses less digits than its factorization.

402040402444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159593 (or 7159591 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 402040402444 its reverse (444204040204), we get a palindrome (846244442648).

The spelling of 402040402444 in words is "four hundred two billion, forty million, four hundred two thousand, four hundred forty-four".