40036453 has 4 divisors (see below), whose sum is σ = 40634080. Its totient is φ = 39438828.

The previous prime is 40036441. The next prime is 40036457. The reversal of 40036453 is 35463004.

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 40036453 - 2⁵ = 40036421 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 (40036457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298713 + ... + 298846.

It is an arithmetic number, because the mean of its divisors is an integer number (10158520).

Almost surely, 2^40036453 is an apocalyptic number.

It is an amenable number.

40036453 is a deficient number, since it is larger than the sum of its proper divisors (597627).

40036453 is an equidigital number, since it uses as much as digits as its factorization.

40036453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597626.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 40036453 is about 6327.4365267460. The cubic root of 40036453 is about 342.0990473809.

Adding to 40036453 its reverse (35463004), we get a palindrome (75499457).

The spelling of 40036453 in words is "forty million, thirty-six thousand, four hundred fifty-three".