400412133 has 32 divisors (see below), whose sum is σ = 650954880. Its totient is φ = 241240320.

The previous prime is 400412119. The next prime is 400412141. The reversal of 400412133 is 331214004.

It is not a de Polignac number, because 400412133 - 2⁶ = 400412069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400412533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47485 + ... + 55277.

It is an arithmetic number, because the mean of its divisors is an integer number (20342340).

Almost surely, 2^400412133 is an apocalyptic number.

It is an amenable number.

400412133 is a deficient number, since it is larger than the sum of its proper divisors (250542747).

400412133 is a wasteful number, since it uses less digits than its factorization.

400412133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986 (or 7980 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400412133 is about 20010.3006724037. The cubic root of 400412133 is about 737.0592646942.

Adding to 400412133 its reverse (331214004), we get a palindrome (731626137).

The spelling of 400412133 in words is "four hundred million, four hundred twelve thousand, one hundred thirty-three".