40444342421 has 8 divisors (see below), whose sum is σ = 46423950720. Its totient is φ = 34515195408.

The previous prime is 40444342409. The next prime is 40444342441. The reversal of 40444342421 is 12424344404.

40444342421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40444342421 - 2¹⁸ = 40444080277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444342441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12613601 + ... + 12616806.

It is an arithmetic number, because the mean of its divisors is an integer number (5802993840).

Almost surely, 2^40444342421 is an apocalyptic number.

It is an amenable number.

40444342421 is a deficient number, since it is larger than the sum of its proper divisors (5979608299).

40444342421 is a wasteful number, since it uses less digits than its factorization.

40444342421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25230643.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 40444342421 its reverse (12424344404), we get a palindrome (52868686825).

The spelling of 40444342421 in words is "forty billion, four hundred forty-four million, three hundred forty-two thousand, four hundred twenty-one".