10001403 has 12 divisors (see below), whose sum is σ = 14588080. Its totient is φ = 6602256.

The previous prime is 10001401. The next prime is 10001419. The reversal of 10001403 is 30410001.

It is not a de Polignac number, because 10001403 - 2¹ = 10001401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4468 + ... + 6321.

Almost surely, 2^10001403 is an apocalyptic number.

10001403 is a deficient number, since it is larger than the sum of its proper divisors (4586677).

10001403 is a wasteful number, since it uses less digits than its factorization.

10001403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10898 (or 10895 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 10001403 is about 3162.4994861660. The cubic root of 10001403 is about 215.4535441049.

Adding to 10001403 its reverse (30410001), we get a palindrome (40411404).

It can be divided in two parts, 10001 and 403, that added together give a square (10404 = 102²).

The spelling of 10001403 in words is "ten million, one thousand, four hundred three".