40345408 has 28 divisors (see below), whose sum is σ = 80357472. Its totient is φ = 20097920.

The previous prime is 40345399. The next prime is 40345423. The reversal of 40345408 is 80454304.

40345408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18891 + ... + 20917.

Almost surely, 2^40345408 is an apocalyptic number.

It is an amenable number.

40345408 is a deficient number, since it is larger than the sum of its proper divisors (40012064).

40345408 is a wasteful number, since it uses less digits than its factorization.

40345408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 40345408 is about 6351.8035234097. The cubic root of 40345408 is about 342.9767683098.

The spelling of 40345408 in words is "forty million, three hundred forty-five thousand, four hundred eight".