400133201 has 8 divisors (see below), whose sum is σ = 433102824. Its totient is φ = 367476480.

The previous prime is 400133191. The next prime is 400133219. The reversal of 400133201 is 102331004.

It can be written as a sum of positive squares in 4 ways, for example, as 6507601 + 393625600 = 2551^2 + 19840^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400133201 - 2¹⁰ = 400132177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400135201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75560 + ... + 80681.

It is an arithmetic number, because the mean of its divisors is an integer number (54137853).

Almost surely, 2^400133201 is an apocalyptic number.

It is an amenable number.

400133201 is a deficient number, since it is larger than the sum of its proper divisors (32969623).

400133201 is a wasteful number, since it uses less digits than its factorization.

400133201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156451.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 400133201 is about 20003.3297478195. The cubic root of 400133201 is about 736.8880767647. Note that the first 3 decimals are identical.

Adding to 400133201 its reverse (102331004), we get a palindrome (502464205).

The spelling of 400133201 in words is "four hundred million, one hundred thirty-three thousand, two hundred one".