49738609 has 4 divisors (see below), whose sum is σ = 49996516. Its totient is φ = 49480704.

The previous prime is 49738603. The next prime is 49738613. The reversal of 49738609 is 90683794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90683794 = 2 ⋅45341897.

It can be written as a sum of positive squares in 2 ways, for example, as 10400625 + 39337984 = 3225^2 + 6272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49738609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49738603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128664 + ... + 129049.

It is an arithmetic number, because the mean of its divisors is an integer number (12499129).

Almost surely, 2^49738609 is an apocalyptic number.

It is an amenable number.

49738609 is a deficient number, since it is larger than the sum of its proper divisors (257907).

49738609 is a wasteful number, since it uses less digits than its factorization.

49738609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257906.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 49738609 is about 7052.5604570255. The cubic root of 49738609 is about 367.7600460968.

The spelling of 49738609 in words is "forty-nine million, seven hundred thirty-eight thousand, six hundred nine".