49403 has 4 divisors (see below), whose sum is σ = 49920. Its totient is φ = 48888.

The previous prime is 49393. The next prime is 49409. The reversal of 49403 is 30494.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49403 - 2⁶ = 49339 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (49409) 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, 68 + ... + 321.

It is an arithmetic number, because the mean of its divisors is an integer number (12480).

2⁴⁹⁴⁰³ is an apocalyptic number.

49403 is a deficient number, since it is larger than the sum of its proper divisors (517).

49403 is a wasteful number, since it uses less digits than its factorization.

49403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 49403 is about 222.2678564255. The cubic root of 49403 is about 36.6931030654.

Adding to 49403 its reverse (30494), we get a palindrome (79897).

The spelling of 49403 in words is "forty-nine thousand, four hundred three".