400401201 has 16 divisors (see below), whose sum is σ = 537526080. Its totient is φ = 265112640.

The previous prime is 400401191. The next prime is 400401217. The reversal of 400401201 is 102104004.

It is not a de Polignac number, because 400401201 - 2⁶ = 400401137 is a prime.

It is a super-2 number, since 2×400401201² = 320642243524484802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400401271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341346 + ... + 342516.

It is an arithmetic number, because the mean of its divisors is an integer number (33595380).

Almost surely, 2^400401201 is an apocalyptic number.

It is an amenable number.

400401201 is a deficient number, since it is larger than the sum of its proper divisors (137124879).

400401201 is a wasteful number, since it uses less digits than its factorization.

400401201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400401201 is about 20010.0275112255. The cubic root of 400401201 is about 737.0525569344.

Adding to 400401201 its reverse (102104004), we get a palindrome (502505205).

The spelling of 400401201 in words is "four hundred million, four hundred one thousand, two hundred one".