49867209 has 12 divisors (see below), whose sum is σ = 82320576. Its totient is φ = 28495512.

The previous prime is 49867187. The next prime is 49867217. The reversal of 49867209 is 90276894.

It is a happy number.

It is not a de Polignac number, because 49867209 - 2⁵ = 49867177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49867219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395709 + ... + 395834.

It is an arithmetic number, because the mean of its divisors is an integer number (6860048).

Almost surely, 2^49867209 is an apocalyptic number.

It is an amenable number.

49867209 is a deficient number, since it is larger than the sum of its proper divisors (32453367).

49867209 is a wasteful number, since it uses less digits than its factorization.

49867209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791556 (or 791553 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 49867209 is about 7061.6718275491. The cubic root of 49867209 is about 368.0767232320.

The spelling of 49867209 in words is "forty-nine million, eight hundred sixty-seven thousand, two hundred nine".