40444455 has 16 divisors (see below), whose sum is σ = 65186784. Its totient is φ = 21411840.

The previous prime is 40444451. The next prime is 40444463. The reversal of 40444455 is 55444404.

It is a happy number.

It is not a de Polignac number, because 40444455 - 2² = 40444451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7786 + ... + 11895.

It is an arithmetic number, because the mean of its divisors is an integer number (4074174).

Almost surely, 2^40444455 is an apocalyptic number.

40444455 is a deficient number, since it is larger than the sum of its proper divisors (24742329).

40444455 is a wasteful number, since it uses less digits than its factorization.

40444455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19826.

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 40444455 is about 6359.5955060051. The cubic root of 40444455 is about 343.2572055006.

Adding to 40444455 its reverse (55444404), we get a palindrome (95888859).

The spelling of 40444455 in words is "forty million, four hundred forty-four thousand, four hundred fifty-five".