49906 has 4 divisors (see below), whose sum is σ = 74862. Its totient is φ = 24952.

The previous prime is 49891. The next prime is 49919. The reversal of 49906 is 60994.

49906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60994 = 2 ⋅30497.

It can be written as a sum of positive squares in only one way, i.e., 38025 + 11881 = 195^2 + 109^2 .

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12475 + ... + 12478.

2⁴⁹⁹⁰⁶ is an apocalyptic number.

49906 is a deficient number, since it is larger than the sum of its proper divisors (24956).

49906 is a wasteful number, since it uses less digits than its factorization.

49906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24955.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 49906 is about 223.3965084776. The cubic root of 49906 is about 36.8172139063.

The spelling of 49906 in words is "forty-nine thousand, nine hundred six".