406903 has 4 divisors (see below), whose sum is σ = 465040. Its totient is φ = 348768.

The previous prime is 406883. The next prime is 406907. The reversal of 406903 is 309604.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 406903 - 2¹³ = 398711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406907) 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, 29058 + ... + 29071.

It is an arithmetic number, because the mean of its divisors is an integer number (116260).

2⁴⁰⁶⁹⁰³ is an apocalyptic number.

406903 is a deficient number, since it is larger than the sum of its proper divisors (58137).

406903 is an equidigital number, since it uses as much as digits as its factorization.

406903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58136.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 406903 is about 637.8894888615. The cubic root of 406903 is about 74.1020627226.

The spelling of 406903 in words is "four hundred six thousand, nine hundred three".