40444000402 has 16 divisors (see below), whose sum is σ = 65409243480. Its totient is φ = 18644568192.

The previous prime is 40444000393. The next prime is 40444000403. The reversal of 40444000402 is 20400044404.

It can be written as a sum of positive squares in 4 ways, for example, as 25666923681 + 14777076721 = 160209^2 + 121561^2 .

It is not an unprimeable number, because it can be changed into a prime (40444000403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889627 + ... + 933982.

Almost surely, 2^40444000402 is an apocalyptic number.

40444000402 is a deficient number, since it is larger than the sum of its proper divisors (24965243078).

40444000402 is a wasteful number, since it uses less digits than its factorization.

40444000402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824477.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40444000402 its reverse (20400044404), we get a palindrome (60844044806).

The spelling of 40444000402 in words is "forty billion, four hundred forty-four million, four hundred two", and thus it is an aban number.