49617909 has 12 divisors (see below), whose sum is σ = 78185952. Its totient is φ = 30071400.

The previous prime is 49617907. The next prime is 49617937. The reversal of 49617909 is 90971694.

It is not a de Polignac number, because 49617909 - 2¹ = 49617907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49617907) 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 11 ways as a sum of consecutive naturals, for example, 250497 + ... + 250694.

It is an arithmetic number, because the mean of its divisors is an integer number (6515496).

Almost surely, 2^49617909 is an apocalyptic number.

It is an amenable number.

49617909 is a deficient number, since it is larger than the sum of its proper divisors (28568043).

49617909 is a wasteful number, since it uses less digits than its factorization.

49617909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501208 (or 501205 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 49617909 is about 7043.9980834750. The cubic root of 49617909 is about 367.4623257228.

The spelling of 49617909 in words is "forty-nine million, six hundred seventeen thousand, nine hundred nine".