49904 has 10 divisors (see below), whose sum is σ = 96720. Its totient is φ = 24944.

The previous prime is 49891. The next prime is 49919. The reversal of 49904 is 40994.

49904 is nontrivially palindromic in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1544 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (9672).

2⁴⁹⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

49904 is a deficient number, since it is larger than the sum of its proper divisors (46816).

49904 is a wasteful number, since it uses less digits than its factorization.

49904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 49904 is about 223.3920320871. The cubic root of 49904 is about 36.8167220789.

It can be divided in two parts, 4990 and 4, that added together give a palindrome (4994).

The spelling of 49904 in words is "forty-nine thousand, nine hundred four".