49129 has 4 divisors (see below), whose sum is σ = 49876. Its totient is φ = 48384.

The previous prime is 49123. The next prime is 49139. The reversal of 49129 is 92194.

49129 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21904 + 27225 = 148^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 49129 - 2³ = 49121 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (49121) 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, 264 + ... + 409.

It is an arithmetic number, because the mean of its divisors is an integer number (12469).

2⁴⁹¹²⁹ is an apocalyptic number.

It is an amenable number.

49129 is a deficient number, since it is larger than the sum of its proper divisors (747).

49129 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 13 representation: 49129 = (19492)₁₃.

49129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 648, while the sum is 25.

The square root of 49129 is about 221.6506259860. The cubic root of 49129 is about 36.6251412358.

The spelling of 49129 in words is "forty-nine thousand, one hundred twenty-nine".