400416303 has 32 divisors (see below), whose sum is σ = 625489920. Its totient is φ = 223123680.

The previous prime is 400416299. The next prime is 400416329. The reversal of 400416303 is 303614004.

It is not a de Polignac number, because 400416303 - 2² = 400416299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 400416303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400416103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161076 + ... + 163542.

It is an arithmetic number, because the mean of its divisors is an integer number (19546560).

Almost surely, 2^400416303 is an apocalyptic number.

400416303 is a deficient number, since it is larger than the sum of its proper divisors (225073617).

400416303 is a wasteful number, since it uses less digits than its factorization.

400416303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 400416303 is about 20010.4048684678. The cubic root of 400416303 is about 737.0618233300.

The spelling of 400416303 in words is "four hundred million, four hundred sixteen thousand, three hundred three".