49126809 has 4 divisors (see below), whose sum is σ = 65502416. Its totient is φ = 32751204.

The previous prime is 49126801. The next prime is 49126811. The reversal of 49126809 is 90862194.

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 not a de Polignac number, because 49126809 - 2³ = 49126801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49126801) 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, 8187799 + ... + 8187804.

It is an arithmetic number, because the mean of its divisors is an integer number (16375604).

Almost surely, 2^49126809 is an apocalyptic number.

It is an amenable number.

49126809 is a deficient number, since it is larger than the sum of its proper divisors (16375607).

49126809 is a wasteful number, since it uses less digits than its factorization.

49126809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375606.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 49126809 is about 7009.0519330363. The cubic root of 49126809 is about 366.2459677207.

The spelling of 49126809 in words is "forty-nine million, one hundred twenty-six thousand, eight hundred nine".