40511923 has 4 divisors (see below), whose sum is σ = 40602600. Its totient is φ = 40421248.

The previous prime is 40511909. The next prime is 40511957. The reversal of 40511923 is 32911504.

40511923 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.

It is a cyclic number.

It is not a de Polignac number, because 40511923 - 2¹³ = 40503731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40511623) 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, 44665 + ... + 45562.

It is an arithmetic number, because the mean of its divisors is an integer number (10150650).

Almost surely, 2^40511923 is an apocalyptic number.

40511923 is a deficient number, since it is larger than the sum of its proper divisors (90677).

40511923 is an equidigital number, since it uses as much as digits as its factorization.

40511923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90676.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 40511923 is about 6364.8977210950. The cubic root of 40511923 is about 343.4479692815.

The spelling of 40511923 in words is "forty million, five hundred eleven thousand, nine hundred twenty-three".