49027148809 has 4 divisors (see below), whose sum is σ = 49204142404. Its totient is φ = 48850155216.

The previous prime is 49027148777. The next prime is 49027148843. The reversal of 49027148809 is 90884172094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90884172094 = 2 ⋅45442086047.

It can be written as a sum of positive squares in 2 ways, for example, as 30693988809 + 18333160000 = 175197^2 + 135400^2 .

It is a cyclic number.

It is not a de Polignac number, because 49027148809 - 2⁵ = 49027148777 is a prime.

It is a super-2 number, since 2×49027148809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49027148899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88496382 + ... + 88496935.

It is an arithmetic number, because the mean of its divisors is an integer number (12301035601).

Almost surely, 2^49027148809 is an apocalyptic number.

It is an amenable number.

49027148809 is a deficient number, since it is larger than the sum of its proper divisors (176993595).

49027148809 is a wasteful number, since it uses less digits than its factorization.

49027148809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176993594.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 49027148809 in words is "forty-nine billion, twenty-seven million, one hundred forty-eight thousand, eight hundred nine".