400109563 has 8 divisors (see below), whose sum is σ = 460869632. Its totient is φ = 340249896.

The previous prime is 400109537. The next prime is 400109573. The reversal of 400109563 is 365901004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400109563 - 2⁵ = 400109531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400109573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224145 + ... + 225922.

It is an arithmetic number, because the mean of its divisors is an integer number (57608704).

Almost surely, 2^400109563 is an apocalyptic number.

400109563 is a deficient number, since it is larger than the sum of its proper divisors (60760069).

400109563 is a wasteful number, since it uses less digits than its factorization.

400109563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450201.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 400109563 is about 20002.7388874624. The cubic root of 400109563 is about 736.8735658441.

The spelling of 400109563 in words is "four hundred million, one hundred nine thousand, five hundred sixty-three".