40005453 has 4 divisors (see below), whose sum is σ = 53340608. Its totient is φ = 26670300.

The previous prime is 40005439. The next prime is 40005467. The reversal of 40005453 is 35450004.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (40005439) and next prime (40005467).

It is not a de Polignac number, because 40005453 - 2⁸ = 40005197 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 (40005853) 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, 6667573 + ... + 6667578.

It is an arithmetic number, because the mean of its divisors is an integer number (13335152).

Almost surely, 2^40005453 is an apocalyptic number.

It is an amenable number.

40005453 is a deficient number, since it is larger than the sum of its proper divisors (13335155).

40005453 is a wasteful number, since it uses less digits than its factorization.

40005453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13335154.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40005453 is about 6324.9864031474. The cubic root of 40005453 is about 342.0107294606.

Adding to 40005453 its reverse (35450004), we get a palindrome (75455457).

It can be divided in two parts, 4000 and 5453, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 40005453 in words is "forty million, five thousand, four hundred fifty-three".