400133211 has 4 divisors (see below), whose sum is σ = 533510952. Its totient is φ = 266755472.

The previous prime is 400133191. The next prime is 400133219. The reversal of 400133211 is 112331004.

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 400133211 - 2⁹ = 400132699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400133219) 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 3 ways as a sum of consecutive naturals, for example, 66688866 + ... + 66688871.

It is an arithmetic number, because the mean of its divisors is an integer number (133377738).

Almost surely, 2^400133211 is an apocalyptic number.

400133211 is a deficient number, since it is larger than the sum of its proper divisors (133377741).

400133211 is a wasteful number, since it uses less digits than its factorization.

400133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133377740.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 400133211 is about 20003.3299977779. The cubic root of 400133211 is about 736.8880829034. Note that the first 3 decimals are identical.

Adding to 400133211 its reverse (112331004), we get a palindrome (512464215).

The spelling of 400133211 in words is "four hundred million, one hundred thirty-three thousand, two hundred eleven".