40523369 has 4 divisors (see below), whose sum is σ = 40536144. Its totient is φ = 40510596.

The previous prime is 40523363. The next prime is 40523377. The reversal of 40523369 is 96332504.

40523369 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40523369 is a prime.

It is a super-2 number, since 2×40523369² = 3284286870220322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40523363) 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, 2414 + ... + 9320.

It is an arithmetic number, because the mean of its divisors is an integer number (10134036).

Almost surely, 2^40523369 is an apocalyptic number.

It is an amenable number.

40523369 is a deficient number, since it is larger than the sum of its proper divisors (12775).

40523369 is an equidigital number, since it uses as much as digits as its factorization.

40523369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 40523369 is about 6365.7968079416. The cubic root of 40523369 is about 343.4803114909.

The spelling of 40523369 in words is "forty million, five hundred twenty-three thousand, three hundred sixty-nine".