40453 has 4 divisors (see below), whose sum is σ = 46240. Its totient is φ = 34668.
The previous prime is 40433. The next prime is 40459. The reversal of 40453 is 35404.
40453 is nontrivially palindromic in base 12.
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 not a de Polignac number, because 40453 - 213 = 32261 is a prime.
It is a Duffinian number.
40453 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40459) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883 + ... + 2896.
It is an arithmetic number, because the mean of its divisors is an integer number (11560).
240453 is an apocalyptic number.
It is an amenable number.
40453 is a deficient number, since it is larger than the sum of its proper divisors (5787).
40453 is an equidigital number, since it uses as much as digits as its factorization.
40453 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5786.
The product of its (nonzero) digits is 240, while the sum is 16.
The square root of 40453 is about 201.1293116381. The cubic root of 40453 is about 34.3281377964.
Adding to 40453 its reverse (35404), we get a palindrome (75857).
It can be divided in two parts, 404 and 53, that multiplied together give a palindrome (21412).
The spelling of 40453 in words is "forty thousand, four hundred fifty-three".
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