40553409 has 12 divisors (see below), whose sum is σ = 58551216. Its totient is φ = 24955632.

The previous prime is 40553407. The next prime is 40553411. The reversal of 40553409 is 90435504.

40553409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40553407) and next prime (40553411).

It is not a de Polignac number, because 40553409 - 2¹ = 40553407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40553407) 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 11 ways as a sum of consecutive naturals, for example, 39487 + ... + 40500.

It is an arithmetic number, because the mean of its divisors is an integer number (4879268).

Almost surely, 2^40553409 is an apocalyptic number.

It is an amenable number.

40553409 is a deficient number, since it is larger than the sum of its proper divisors (17997807).

40553409 is a wasteful number, since it uses less digits than its factorization.

40553409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80016 (or 80003 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 40553409 is about 6368.1558555048. The cubic root of 40553409 is about 343.5651645872.

The spelling of 40553409 in words is "forty million, five hundred fifty-three thousand, four hundred nine".