40450440 has 64 divisors (see below), whose sum is σ = 121772160. Its totient is φ = 10749440.

The previous prime is 40450439. The next prime is 40450451. The reversal of 40450440 is 4405404.

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 15 ways as a sum of consecutive naturals, for example, 62197 + ... + 62843.

It is an arithmetic number, because the mean of its divisors is an integer number (1902690).

Almost surely, 2^40450440 is an apocalyptic number.

40450440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40450440 is an abundant number, since it is smaller than the sum of its proper divisors (81321720).

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

40450440 is a wasteful number, since it uses less digits than its factorization.

40450440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40450440 is about 6360.0660373930. The cubic root of 40450440 is about 343.2741364829.

Adding to 40450440 its reverse (4405404), we get a palindrome (44855844).

The spelling of 40450440 in words is "forty million, four hundred fifty thousand, four hundred forty".