402040440244 has 24 divisors (see below), whose sum is σ = 710583904800. Its totient is φ = 199018783776.

The previous prime is 402040440209. The next prime is 402040440293. The reversal of 402040440244 is 442044040204.

It is a congruent number.

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, 407682 + ... + 985030.

It is an arithmetic number, because the mean of its divisors is an integer number (29607662700).

Almost surely, 2^402040440244 is an apocalyptic number.

It is an amenable number.

402040440244 is a deficient number, since it is larger than the sum of its proper divisors (308543464556).

402040440244 is a wasteful number, since it uses less digits than its factorization.

402040440244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579087 (or 579085 counting only the distinct ones).

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

Adding to 402040440244 its reverse (442044040204), we get a palindrome (844084480448).

The spelling of 402040440244 in words is "four hundred two billion, forty million, four hundred forty thousand, two hundred forty-four".