49207809 has 64 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 25288704.

The previous prime is 49207799. The next prime is 49207841. The reversal of 49207809 is 90870294.

49207809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49207809 - 2⁸ = 49207553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49207009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 507249 + ... + 507345.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^49207809 is an apocalyptic number.

49207809 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

49207809 is a deficient number, since it is larger than the sum of its proper divisors (35464191).

49207809 is a wasteful number, since it uses less digits than its factorization.

49207809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 49207809 is about 7014.8277954630. The cubic root of 49207809 is about 366.4471452758.

The spelling of 49207809 in words is "forty-nine million, two hundred seven thousand, eight hundred nine".