49089 has 4 divisors (see below), whose sum is σ = 65456. Its totient is φ = 32724.

The previous prime is 49081. The next prime is 49103. The reversal of 49089 is 98094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49089 - 2³ = 49081 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 49089.

It is not an unprimeable number, because it can be changed into a prime (49081) 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, 8179 + ... + 8184.

It is an arithmetic number, because the mean of its divisors is an integer number (16364).

2⁴⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

49089 is a deficient number, since it is larger than the sum of its proper divisors (16367).

49089 is a wasteful number, since it uses less digits than its factorization.

49089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16366.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 49089 is about 221.5603755187. The cubic root of 49089 is about 36.6151986803.

Adding to 49089 its product of nonzero digits (2592), we get a triangular number (51681 = T₃₂₁).

The spelling of 49089 in words is "forty-nine thousand, eighty-nine".