400195 has 4 divisors (see below), whose sum is σ = 480240. Its totient is φ = 320152.

The previous prime is 400187. The next prime is 400199. The reversal of 400195 is 591004.

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 400195 - 2³ = 400187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400199) 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, 40015 + ... + 40024.

It is an arithmetic number, because the mean of its divisors is an integer number (120060).

2⁴⁰⁰¹⁹⁵ is an apocalyptic number.

400195 is a deficient number, since it is larger than the sum of its proper divisors (80045).

400195 is an equidigital number, since it uses as much as digits as its factorization.

400195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80044.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 400195 is about 632.6096742858. The cubic root of 400195 is about 73.6926011301.

Adding to 400195 its reverse (591004), we get a palindrome (991199).

It can be divided in two parts, 4001 and 95, that added together give a 12-th power (4096 = 2¹²).

The spelling of 400195 in words is "four hundred thousand, one hundred ninety-five".