49209 has 8 divisors (see below), whose sum is σ = 67200. Its totient is φ = 32016.

The previous prime is 49207. The next prime is 49211. The reversal of 49209 is 90294.

It is an interprime number because it is at equal distance from previous prime (49207) and next prime (49211).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49209 - 2¹ = 49207 is a prime.

It is a Curzon number.

49209 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (49201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34 + ... + 315.

It is an arithmetic number, because the mean of its divisors is an integer number (8400).

2⁴⁹²⁰⁹ is an apocalyptic number.

It is an amenable number.

49209 is a deficient number, since it is larger than the sum of its proper divisors (17991).

49209 is a wasteful number, since it uses less digits than its factorization.

49209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 49209 is about 221.8310167673. The cubic root of 49209 is about 36.6450101683.

The spelling of 49209 in words is "forty-nine thousand, two hundred nine".