402039040444 has 12 divisors (see below), whose sum is σ = 722583681064. Its totient is φ = 195586560144.

The previous prime is 402039040441. The next prime is 402039040471. The reversal of 402039040444 is 444040930204.

It is a super-2 number, since 2×402039040444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402039040441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358239854 + ... + 1358240149.

Almost surely, 2^402039040444 is an apocalyptic number.

It is an amenable number.

402039040444 is a deficient number, since it is larger than the sum of its proper divisors (320544640620).

402039040444 is a wasteful number, since it uses less digits than its factorization.

402039040444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716480044 (or 2716480042 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 402039040444 its reverse (444040930204), we get a palindrome (846079970648).

The spelling of 402039040444 in words is "four hundred two billion, thirty-nine million, forty thousand, four hundred forty-four".