49581909 has 32 divisors (see below), whose sum is σ = 81849600. Its totient is φ = 29453760.

The previous prime is 49581869. The next prime is 49581913. The reversal of 49581909 is 90918594.

It is not a de Polignac number, because 49581909 - 2⁷ = 49581781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49581209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7744 + ... + 12614.

It is an arithmetic number, because the mean of its divisors is an integer number (2557800).

Almost surely, 2^49581909 is an apocalyptic number.

It is an amenable number.

49581909 is a deficient number, since it is larger than the sum of its proper divisors (32267691).

49581909 is a wasteful number, since it uses less digits than its factorization.

49581909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4922 (or 4916 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 49581909 is about 7041.4422528343. The cubic root of 49581909 is about 367.3734341337.

The spelling of 49581909 in words is "forty-nine million, five hundred eighty-one thousand, nine hundred nine".