400433113 has 24 divisors (see below), whose sum is σ = 454273920. Its totient is φ = 351630720.

The previous prime is 400433069. The next prime is 400433141. The reversal of 400433113 is 311334004.

It is not a de Polignac number, because 400433113 - 2⁹ = 400432601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400433213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435268 + ... + 436186.

It is an arithmetic number, because the mean of its divisors is an integer number (18928080).

Almost surely, 2^400433113 is an apocalyptic number.

It is an amenable number.

400433113 is a deficient number, since it is larger than the sum of its proper divisors (53840807).

400433113 is a wasteful number, since it uses less digits than its factorization.

400433113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 400433113 is about 20010.8248955409. The cubic root of 400433113 is about 737.0721374587.

Adding to 400433113 its reverse (311334004), we get a palindrome (711767117).

The spelling of 400433113 in words is "four hundred million, four hundred thirty-three thousand, one hundred thirteen".