400544103 has 8 divisors (see below), whose sum is σ = 557278848. Its totient is φ = 255419384.

The previous prime is 400544077. The next prime is 400544107. The reversal of 400544103 is 301445004.

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

It is a cyclic number.

It is not a de Polignac number, because 400544103 - 2¹⁰ = 400543079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400544103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400544107) 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, 2902425 + ... + 2902562.

It is an arithmetic number, because the mean of its divisors is an integer number (69659856).

Almost surely, 2^400544103 is an apocalyptic number.

400544103 is a deficient number, since it is larger than the sum of its proper divisors (156734745).

400544103 is a wasteful number, since it uses less digits than its factorization.

400544103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805013.

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

The square root of 400544103 is about 20013.5979523923. The cubic root of 400544103 is about 737.1402304616.

Adding to 400544103 its reverse (301445004), we get a palindrome (701989107).

Subtracting from 400544103 its reverse (301445004), we obtain a palindrome (99099099).

The spelling of 400544103 in words is "four hundred million, five hundred forty-four thousand, one hundred three".