40401444 has 24 divisors (see below), whose sum is σ = 94475808. Its totient is φ = 13437760.

The previous prime is 40401433. The next prime is 40401451. The reversal of 40401444 is 44410404.

It is a self number, because there is not a number n which added to its sum of digits gives 40401444.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2464 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (3936492).

Almost surely, 2^40401444 is an apocalyptic number.

It is an amenable number.

40401444 is an abundant number, since it is smaller than the sum of its proper divisors (54074364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40401444 is a wasteful number, since it uses less digits than its factorization.

40401444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7355 (or 7353 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 40401444 is about 6356.2130234913. The cubic root of 40401444 is about 343.1354824087.

Adding to 40401444 its reverse (44410404), we get a palindrome (84811848).

The spelling of 40401444 in words is "forty million, four hundred one thousand, four hundred forty-four".