401999103 has 24 divisors (see below), whose sum is σ = 653892096. Its totient is φ = 235774800.

The previous prime is 401999077. The next prime is 401999111. The reversal of 401999103 is 301999104.

It is not a de Polignac number, because 401999103 - 2⁵ = 401999071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401999173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62425 + ... + 68562.

It is an arithmetic number, because the mean of its divisors is an integer number (27245504).

Almost surely, 2^401999103 is an apocalyptic number.

401999103 is a deficient number, since it is larger than the sum of its proper divisors (251892993).

401999103 is a wasteful number, since it uses less digits than its factorization.

401999103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131035 (or 131032 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 401999103 is about 20049.9152866041. The cubic root of 401999103 is about 738.0317202750.

Subtracting from 401999103 its reverse (301999104), we obtain a palindrome (99999999).

The spelling of 401999103 in words is "four hundred one million, nine hundred ninety-nine thousand, one hundred three".