40444012413 has 12 divisors (see below), whose sum is σ = 66764719008. Its totient is φ = 23110864200.

The previous prime is 40444012409. The next prime is 40444012463. The reversal of 40444012413 is 31421044404.

It is not a de Polignac number, because 40444012413 - 2² = 40444012409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444012463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320984163 + ... + 320984288.

It is an arithmetic number, because the mean of its divisors is an integer number (5563726584).

Almost surely, 2^40444012413 is an apocalyptic number.

It is an amenable number.

40444012413 is a deficient number, since it is larger than the sum of its proper divisors (26320706595).

40444012413 is a wasteful number, since it uses less digits than its factorization.

40444012413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641968464 (or 641968461 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 40444012413 its reverse (31421044404), we get a palindrome (71865056817).

The spelling of 40444012413 in words is "forty billion, four hundred forty-four million, twelve thousand, four hundred thirteen".