400196 has 6 divisors (see below), whose sum is σ = 700350. Its totient is φ = 200096.

The previous prime is 400187. The next prime is 400199. The reversal of 400196 is 691004.

It can be written as a sum of positive squares in only one way, i.e., 215296 + 184900 = 464^2 + 430^2 .

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 50021 + ... + 50028.

It is an arithmetic number, because the mean of its divisors is an integer number (116725).

2⁴⁰⁰¹⁹⁶ is an apocalyptic number.

It is an amenable number.

400196 is a deficient number, since it is larger than the sum of its proper divisors (300154).

400196 is a wasteful number, since it uses less digits than its factorization.

400196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100053 (or 100051 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 400196 is about 632.6104646621. The cubic root of 400196 is about 73.6926625106.

It can be divided in two parts, 400 and 196, that multiplied together give a square (78400 = 280²).

The spelling of 400196 in words is "four hundred thousand, one hundred ninety-six".