402000043444 has 12 divisors (see below), whose sum is σ = 705088115424. Its totient is φ = 200546296184.

The previous prime is 402000043433. The next prime is 402000043451. The reversal of 402000043444 is 444340000204.

It is a super-2 number, since 2×402000043444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113429392 + ... + 113432935.

It is an arithmetic number, because the mean of its divisors is an integer number (58757342952).

Almost surely, 2^402000043444 is an apocalyptic number.

It is an amenable number.

402000043444 is a deficient number, since it is larger than the sum of its proper divisors (303088071980).

402000043444 is a wasteful number, since it uses less digits than its factorization.

402000043444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226862774 (or 226862772 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

Adding to 402000043444 its reverse (444340000204), we get a palindrome (846340043648).

The spelling of 402000043444 in words is "four hundred two billion, forty-three thousand, four hundred forty-four".