40401344 has 14 divisors (see below), whose sum is σ = 80171544. Its totient is φ = 20200640.

The previous prime is 40401301. The next prime is 40401349. The reversal of 40401344 is 44310404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40401349) 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 as a sum of consecutive naturals, namely, 315572 + ... + 315699.

Almost surely, 2^40401344 is an apocalyptic number.

It is an amenable number.

40401344 is a deficient number, since it is larger than the sum of its proper divisors (39770200).

40401344 is an equidigital number, since it uses as much as digits as its factorization.

40401344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631283 (or 631273 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40401344 is about 6356.2051571673. The cubic root of 40401344 is about 343.1351993036.

Adding to 40401344 its reverse (44310404), we get a palindrome (84711748).

The spelling of 40401344 in words is "forty million, four hundred one thousand, three hundred forty-four".