400246133 has 16 divisors (see below), whose sum is σ = 463879680. Its totient is φ = 338256000.

The previous prime is 400246129. The next prime is 400246151. The reversal of 400246133 is 331642004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400246133 - 2² = 400246129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400246099 and 400246108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400246123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190553 + ... + 192641.

It is an arithmetic number, because the mean of its divisors is an integer number (28992480).

Almost surely, 2^400246133 is an apocalyptic number.

It is an amenable number.

400246133 is a deficient number, since it is larger than the sum of its proper divisors (63633547).

400246133 is a wasteful number, since it uses less digits than its factorization.

400246133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 400246133 is about 20006.1523787059. The cubic root of 400246133 is about 736.9573956950.

Adding to 400246133 its reverse (331642004), we get a palindrome (731888137).

The spelling of 400246133 in words is "four hundred million, two hundred forty-six thousand, one hundred thirty-three".