440042523 has 8 divisors (see below), whose sum is σ = 586883088. Its totient is φ = 293281824.

The previous prime is 440042497. The next prime is 440042543. The reversal of 440042523 is 325240044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440042523 - 2⁶ = 440042459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440042493 and 440042502.

It is not an unprimeable number, because it can be changed into a prime (440042543) 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 7 ways as a sum of consecutive naturals, for example, 5640 + ... + 30197.

It is an arithmetic number, because the mean of its divisors is an integer number (73360386).

Almost surely, 2^440042523 is an apocalyptic number.

440042523 is a deficient number, since it is larger than the sum of its proper divisors (146840565).

440042523 is a wasteful number, since it uses less digits than its factorization.

440042523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39933.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 440042523 is about 20977.1905411568. The cubic root of 440042523 is about 760.6149933247.

Adding to 440042523 its reverse (325240044), we get a palindrome (765282567).

The spelling of 440042523 in words is "four hundred forty million, forty-two thousand, five hundred twenty-three".