40044523 has 4 divisors (see below), whose sum is σ = 40099888. Its totient is φ = 39989160.

The previous prime is 40044509. The next prime is 40044527. The reversal of 40044523 is 32544004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40044523 - 2¹⁷ = 39913451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40044494 and 40044503.

It is not an unprimeable number, because it can be changed into a prime (40044527) 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, 26583 + ... + 28048.

It is an arithmetic number, because the mean of its divisors is an integer number (10024972).

Almost surely, 2^40044523 is an apocalyptic number.

40044523 is a deficient number, since it is larger than the sum of its proper divisors (55365).

40044523 is an equidigital number, since it uses as much as digits as its factorization.

40044523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55364.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40044523 is about 6328.0741936232. The cubic root of 40044523 is about 342.1220310506.

Adding to 40044523 its reverse (32544004), we get a palindrome (72588527).

The spelling of 40044523 in words is "forty million, forty-four thousand, five hundred twenty-three".