400105443 has 4 divisors (see below), whose sum is σ = 533473928. Its totient is φ = 266736960.

The previous prime is 400105417. The next prime is 400105469. The reversal of 400105443 is 344501004.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (400105417) and next prime (400105469).

It is not a de Polignac number, because 400105443 - 2¹³ = 400097251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400105403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66684238 + ... + 66684243.

It is an arithmetic number, because the mean of its divisors is an integer number (133368482).

Almost surely, 2^400105443 is an apocalyptic number.

400105443 is a deficient number, since it is larger than the sum of its proper divisors (133368485).

400105443 is a wasteful number, since it uses less digits than its factorization.

400105443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133368484.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400105443 is about 20002.6359013006. The cubic root of 400105443 is about 736.8710365956.

Adding to 400105443 its reverse (344501004), we get a palindrome (744606447).

The spelling of 400105443 in words is "four hundred million, one hundred five thousand, four hundred forty-three".