400112717 has 4 divisors (see below), whose sum is σ = 400232700. Its totient is φ = 399992736.

The previous prime is 400112707. The next prime is 400112723. The reversal of 400112717 is 717211004.

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 150283081 + 249829636 = 12259^2 + 15806^2 .

It is a cyclic number.

It is not a de Polignac number, because 400112717 - 2⁶ = 400112653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400112692 and 400112701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400112707) 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 3 ways as a sum of consecutive naturals, for example, 54842 + ... + 61707.

It is an arithmetic number, because the mean of its divisors is an integer number (100058175).

Almost surely, 2^400112717 is an apocalyptic number.

It is an amenable number.

400112717 is a deficient number, since it is larger than the sum of its proper divisors (119983).

400112717 is a wasteful number, since it uses less digits than its factorization.

400112717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119982.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 400112717 is about 20002.8177265104. The cubic root of 400112717 is about 736.8755020580.

The spelling of 400112717 in words is "four hundred million, one hundred twelve thousand, seven hundred seventeen".