49322809 has 4 divisors (see below), whose sum is σ = 49343220. Its totient is φ = 49302400.

The previous prime is 49322789. The next prime is 49322839. The reversal of 49322809 is 90822394.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31047184 + 18275625 = 5572^2 + 4275^2 .

It is a cyclic number.

It is not a de Polignac number, because 49322809 - 2¹⁵ = 49290041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49322839) 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, 6004 + ... + 11605.

It is an arithmetic number, because the mean of its divisors is an integer number (12335805).

Almost surely, 2^49322809 is an apocalyptic number.

It is an amenable number.

49322809 is a deficient number, since it is larger than the sum of its proper divisors (20411).

49322809 is a wasteful number, since it uses less digits than its factorization.

49322809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 49322809 is about 7023.0199344726. The cubic root of 49322809 is about 366.7323888619.

The spelling of 49322809 in words is "forty-nine million, three hundred twenty-two thousand, eight hundred nine".