400002440195 has 4 divisors (see below), whose sum is σ = 480002928240. Its totient is φ = 320001952152.

The previous prime is 400002440191. The next prime is 400002440269. The reversal of 400002440195 is 591044200004.

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

It is a cyclic number.

It is not a de Polignac number, because 400002440195 - 2² = 400002440191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400002440191) 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, 40000244015 + ... + 40000244024.

It is an arithmetic number, because the mean of its divisors is an integer number (120000732060).

Almost surely, 2^400002440195 is an apocalyptic number.

400002440195 is a deficient number, since it is larger than the sum of its proper divisors (80000488045).

400002440195 is an equidigital number, since it uses as much as digits as its factorization.

400002440195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80000488044.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 400002440195 its reverse (591044200004), we get a palindrome (991046640199).

The spelling of 400002440195 in words is "four hundred billion, two million, four hundred forty thousand, one hundred ninety-five".