49493809 has 4 divisors (see below), whose sum is σ = 49797616. Its totient is φ = 49190004.

The previous prime is 49493789. The next prime is 49493819. The reversal of 49493809 is 90839494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49493809 - 2²⁵ = 15939377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49493819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151659 + ... + 151984.

It is an arithmetic number, because the mean of its divisors is an integer number (12449404).

Almost surely, 2^49493809 is an apocalyptic number.

It is an amenable number.

49493809 is a deficient number, since it is larger than the sum of its proper divisors (303807).

49493809 is a wasteful number, since it uses less digits than its factorization.

49493809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303806.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 49493809 is about 7035.1836507656. The cubic root of 49493809 is about 367.1557150178.

The spelling of 49493809 in words is "forty-nine million, four hundred ninety-three thousand, eight hundred nine".