2000403 has 16 divisors (see below), whose sum is σ = 3034240. Its totient is φ = 1301832.

The previous prime is 2000393. The next prime is 2000413. The reversal of 2000403 is 3040002.

It is an interprime number because it is at equal distance from previous prime (2000393) and next prime (2000413).

It is not a de Polignac number, because 2000403 - 2⁴ = 2000387 is a prime.

It is a super-2 number, since 2×2000403² = 8003224324818, which contains 22 as substring.

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 (2000413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300 + ... + 2022.

It is an arithmetic number, because the mean of its divisors is an integer number (189640).

2^2000403 is an apocalyptic number.

2000403 is a deficient number, since it is larger than the sum of its proper divisors (1033837).

2000403 is a wasteful number, since it uses less digits than its factorization.

2000403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 2000403 is about 1414.3560372127. The cubic root of 2000403 is about 126.0005668909. Note that the first 3 decimals are identical.

Adding to 2000403 its reverse (3040002), we get a palindrome (5040405).

The spelling of 2000403 in words is "two million, four hundred three", and thus it is an aban number.