249403 has 16 divisors (see below), whose sum is σ = 322560. Its totient is φ = 187200.

The previous prime is 249397. The next prime is 249419. The reversal of 249403 is 304942.

It is a cyclic number.

It is not a de Polignac number, because 249403 - 2⁹ = 248891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249433) 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, 3118 + ... + 3196.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2²⁴⁹⁴⁰³ is an apocalyptic number.

249403 is a deficient number, since it is larger than the sum of its proper divisors (73157).

249403 is a wasteful number, since it uses less digits than its factorization.

249403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

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

The square root of 249403 is about 499.4026431648. The cubic root of 249403 is about 62.9458676686.

The spelling of 249403 in words is "two hundred forty-nine thousand, four hundred three".