40444481 has 8 divisors (see below), whose sum is σ = 50424384. Its totient is φ = 31515120.

The previous prime is 40444463. The next prime is 40444499. The reversal of 40444481 is 18444404.

It is an interprime number because it is at equal distance from previous prime (40444463) and next prime (40444499).

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

It is a de Polignac number, because none of the positive numbers 2^k-40444481 is a prime.

It is a super-2 number, since 2×40444481² = 3271512086718722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40444421) 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, 262550 + ... + 262703.

It is an arithmetic number, because the mean of its divisors is an integer number (6303048).

Almost surely, 2^40444481 is an apocalyptic number.

It is an amenable number.

40444481 is a deficient number, since it is larger than the sum of its proper divisors (9979903).

40444481 is a wasteful number, since it uses less digits than its factorization.

40444481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525271.

The product of its (nonzero) digits is 8192, while the sum is 29.

The square root of 40444481 is about 6359.5975501599. The cubic root of 40444481 is about 343.2572790557.

Adding to 40444481 its reverse (18444404), we get a palindrome (58888885).

The spelling of 40444481 in words is "forty million, four hundred forty-four thousand, four hundred eighty-one".