2405903 has 8 divisors (see below), whose sum is σ = 2468400. Its totient is φ = 2344320.

The previous prime is 2405881. The next prime is 2405917. The reversal of 2405903 is 3095042.

2405903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2405903 - 2¹⁰ = 2404879 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9863 + ... + 10103.

It is an arithmetic number, because the mean of its divisors is an integer number (308550).

2^2405903 is an apocalyptic number.

2405903 is a deficient number, since it is larger than the sum of its proper divisors (62497).

2405903 is a wasteful number, since it uses less digits than its factorization.

2405903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2405903 is about 1551.0973534888. The cubic root of 2405903 is about 133.9962685528.

The spelling of 2405903 in words is "two million, four hundred five thousand, nine hundred three".