40440400023 has 8 divisors (see below), whose sum is σ = 55659905536. Its totient is φ = 26090580600.

The previous prime is 40440400001. The next prime is 40440400043. The reversal of 40440400023 is 32000404404.

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

It is not a de Polignac number, because 40440400023 - 2⁵ = 40440399991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440400043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217421413 + ... + 217421598.

It is an arithmetic number, because the mean of its divisors is an integer number (6957488192).

Almost surely, 2^40440400023 is an apocalyptic number.

40440400023 is a deficient number, since it is larger than the sum of its proper divisors (15219505513).

40440400023 is a wasteful number, since it uses less digits than its factorization.

40440400023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434843045.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 40440400023 its reverse (32000404404), we get a palindrome (72440804427).

The spelling of 40440400023 in words is "forty billion, four hundred forty million, four hundred thousand, twenty-three".