49489 has 6 divisors (see below), whose sum is σ = 54530. Its totient is φ = 44880.

The previous prime is 49481. The next prime is 49499. The reversal of 49489 is 98494.

49489 = 62² + 63² + ... + 72².

It can be written as a sum of positive squares in only one way, i.e., 48400 + 1089 = 220^2 + 33^2 .

It is not a de Polignac number, because 49489 - 2³ = 49481 is a prime.

It is a super-2 number, since 2×49489² = 4898322242, which contains 22 as substring.

It is a Duffinian number.

49489 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (49481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84 + ... + 325.

2⁴⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

49489 is a deficient number, since it is larger than the sum of its proper divisors (5041).

49489 is a wasteful number, since it uses less digits than its factorization.

49489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 420 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 49489 is about 222.4612325777. The cubic root of 49489 is about 36.7143823234.

Subtracting from 49489 its sum of digits (34), we obtain a triangular number (49455 = T₃₁₄).

The spelling of 49489 in words is "forty-nine thousand, four hundred eighty-nine".