40808493 has 24 divisors (see below), whose sum is σ = 66383616. Its totient is φ = 23932800.

The previous prime is 40808479. The next prime is 40808503. The reversal of 40808493 is 39480804.

40808493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40808493 - 2⁶ = 40808429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40808093) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3580 + ... + 9717.

It is an arithmetic number, because the mean of its divisors is an integer number (2765984).

Almost surely, 2^40808493 is an apocalyptic number.

It is an amenable number.

40808493 is a deficient number, since it is larger than the sum of its proper divisors (25575123).

40808493 is a wasteful number, since it uses less digits than its factorization.

40808493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13345 (or 13342 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 40808493 is about 6388.1525498379. The cubic root of 40808493 is about 344.2840097530.

The spelling of 40808493 in words is "forty million, eight hundred eight thousand, four hundred ninety-three".