2049403 has 4 divisors (see below), whose sum is σ = 2072520. Its totient is φ = 2026288.

The previous prime is 2049361. The next prime is 2049407. The reversal of 2049403 is 3049402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3049402 = 2 ⋅1524701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2049403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2049407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11425 + ... + 11602.

It is an arithmetic number, because the mean of its divisors is an integer number (518130).

2^2049403 is an apocalyptic number.

2049403 is a deficient number, since it is larger than the sum of its proper divisors (23117).

2049403 is an equidigital number, since it uses as much as digits as its factorization.

2049403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23116.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2049403 is about 1431.5736097037. The cubic root of 2049403 is about 127.0210765442.

Subtracting 2049403 from its reverse (3049402), we obtain a palindrome (999999).

The spelling of 2049403 in words is "two million, forty-nine thousand, four hundred three".