40343423444 has 12 divisors (see below), whose sum is σ = 74316832800. Its totient is φ = 19110042648.

The previous prime is 40343423437. The next prime is 40343423453. The reversal of 40343423444 is 44432434304.

40343423444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40343423444² (a number of 22 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, 265417184 + ... + 265417335.

It is an arithmetic number, because the mean of its divisors is an integer number (6193069400).

Almost surely, 2^40343423444 is an apocalyptic number.

It is an amenable number.

40343423444 is a deficient number, since it is larger than the sum of its proper divisors (33973409356).

40343423444 is a wasteful number, since it uses less digits than its factorization.

40343423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530834542 (or 530834540 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 35.

Adding to 40343423444 its reverse (44432434304), we get a palindrome (84775857748).

The spelling of 40343423444 in words is "forty billion, three hundred forty-three million, four hundred twenty-three thousand, four hundred forty-four".