40043453 has 4 divisors (see below), whose sum is σ = 40159200. Its totient is φ = 39927708.

The previous prime is 40043417. The next prime is 40043467. The reversal of 40043453 is 35434004.

It is a happy number.

40043453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40043453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40063453) 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 3 ways as a sum of consecutive naturals, for example, 57353 + ... + 58046.

It is an arithmetic number, because the mean of its divisors is an integer number (10039800).

Almost surely, 2^40043453 is an apocalyptic number.

It is an amenable number.

40043453 is a deficient number, since it is larger than the sum of its proper divisors (115747).

40043453 is a wasteful number, since it uses less digits than its factorization.

40043453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115746.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40043453 is about 6327.9896491698. The cubic root of 40043453 is about 342.1189838272.

Adding to 40043453 its reverse (35434004), we get a palindrome (75477457).

The spelling of 40043453 in words is "forty million, forty-three thousand, four hundred fifty-three".