400328105 has 4 divisors (see below), whose sum is σ = 480393732. Its totient is φ = 320262480.

The previous prime is 400328083. The next prime is 400328113. The reversal of 400328105 is 501823004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 88134544 + 312193561 = 9388^2 + 17669^2 .

It is not a de Polignac number, because 400328105 - 2²⁶ = 333219241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40032806 + ... + 40032815.

It is an arithmetic number, because the mean of its divisors is an integer number (120098433).

Almost surely, 2^400328105 is an apocalyptic number.

It is an amenable number.

400328105 is a deficient number, since it is larger than the sum of its proper divisors (80065627).

400328105 is an equidigital number, since it uses as much as digits as its factorization.

400328105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80065626.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 400328105 is about 20008.2009436131. The cubic root of 400328105 is about 737.0077028628.

The spelling of 400328105 in words is "four hundred million, three hundred twenty-eight thousand, one hundred five".