920403 has 20 divisors (see below), whose sum is σ = 1501368. Its totient is φ = 557280.

The previous prime is 920399. The next prime is 920407. The reversal of 920403 is 304029.

920403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (920399) and next prime (920407).

It is not a de Polignac number, because 920403 - 2² = 920399 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 920403.

It is not an unprimeable number, because it can be changed into a prime (920407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 375 + ... + 1407.

2⁹²⁰⁴⁰³ is an apocalyptic number.

920403 is a deficient number, since it is larger than the sum of its proper divisors (580965).

920403 is a wasteful number, since it uses less digits than its factorization.

920403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 920403 is about 959.3763599339. The cubic root of 920403 is about 97.2730817552.

The spelling of 920403 in words is "nine hundred twenty thousand, four hundred three".