440123013 has 36 divisors (see below), whose sum is σ = 736770528. Its totient is φ = 251034240.

The previous prime is 440123003. The next prime is 440123023. The reversal of 440123013 is 310321044.

It is an interprime number because it is at equal distance from previous prime (440123003) and next prime (440123023).

It is not a de Polignac number, because 440123013 - 2⁴ = 440122997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440123003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20920 + ... + 36302.

It is an arithmetic number, because the mean of its divisors is an integer number (20465848).

Almost surely, 2^440123013 is an apocalyptic number.

It is an amenable number.

440123013 is a deficient number, since it is larger than the sum of its proper divisors (296647515).

440123013 is a wasteful number, since it uses less digits than its factorization.

440123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15434 (or 15414 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 440123013 is about 20979.1089658260. The cubic root of 440123013 is about 760.6613662434.

Adding to 440123013 its reverse (310321044), we get a palindrome (750444057).

The spelling of 440123013 in words is "four hundred forty million, one hundred twenty-three thousand, thirteen".