400024008113 has 4 divisors (see below), whose sum is σ = 400051861860. Its totient is φ = 399996154368.

The previous prime is 400024008073. The next prime is 400024008191. The reversal of 400024008113 is 311800420004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 236685169009 + 163338839104 = 486503^2 + 404152^2 .

It is a cyclic number.

It is not a de Polignac number, because 400024008113 - 2¹⁴ = 400023991729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400024098113) 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, 13905320 + ... + 13934057.

It is an arithmetic number, because the mean of its divisors is an integer number (100012965465).

Almost surely, 2^400024008113 is an apocalyptic number.

It is an amenable number.

400024008113 is a deficient number, since it is larger than the sum of its proper divisors (27853747).

400024008113 is a wasteful number, since it uses less digits than its factorization.

400024008113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27853746.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 400024008113 its reverse (311800420004), we get a palindrome (711824428117).

The spelling of 400024008113 in words is "four hundred billion, twenty-four million, eight thousand, one hundred thirteen".