400340113 has 4 divisors (see below), whose sum is σ = 410104548. Its totient is φ = 390575680.

The previous prime is 400340077. The next prime is 400340119. The reversal of 400340113 is 311043004.

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 5602689 + 394737424 = 2367^2 + 19868^2 .

It is a cyclic number.

It is not a de Polignac number, because 400340113 - 2²¹ = 398242961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400340119) 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, 4882156 + ... + 4882237.

It is an arithmetic number, because the mean of its divisors is an integer number (102526137).

Almost surely, 2^400340113 is an apocalyptic number.

It is an amenable number.

400340113 is a deficient number, since it is larger than the sum of its proper divisors (9764435).

400340113 is an equidigital number, since it uses as much as digits as its factorization.

400340113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9764434.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400340113 is about 20008.5010183172. The cubic root of 400340113 is about 737.0150717350.

Adding to 400340113 its reverse (311043004), we get a palindrome (711383117).

The spelling of 400340113 in words is "four hundred million, three hundred forty thousand, one hundred thirteen".