400204202403 has 8 divisors (see below), whose sum is σ = 533645356816. Its totient is φ = 266782924800.

The previous prime is 400204202401. The next prime is 400204202413. The reversal of 400204202403 is 304202402004.

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

It is not a de Polignac number, because 400204202403 - 2¹ = 400204202401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400204202403.

It is not an unprimeable number, because it can be changed into a prime (400204202401) 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, 4922158 + ... + 5002803.

It is an arithmetic number, because the mean of its divisors is an integer number (66705669602).

Almost surely, 2^400204202403 is an apocalyptic number.

400204202403 is a deficient number, since it is larger than the sum of its proper divisors (133441154413).

400204202403 is a wasteful number, since it uses less digits than its factorization.

400204202403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938405.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 400204202403 its reverse (304202402004), we get a palindrome (704406604407).

The spelling of 400204202403 in words is "four hundred billion, two hundred four million, two hundred two thousand, four hundred three".