47791844 has 6 divisors (see below), whose sum is σ = 83635734. Its totient is φ = 23895920.

The previous prime is 47791823. The next prime is 47791847. The reversal of 47791844 is 44819774.

It can be written as a sum of positive squares in only one way, i.e., 44729344 + 3062500 = 6688^2 + 1750^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47791795 and 47791804.

It is not an unprimeable number, because it can be changed into a prime (47791847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5973977 + ... + 5973984.

It is an arithmetic number, because the mean of its divisors is an integer number (13939289).

Almost surely, 2^47791844 is an apocalyptic number.

It is an amenable number.

47791844 is a deficient number, since it is larger than the sum of its proper divisors (35843890).

47791844 is a wasteful number, since it uses less digits than its factorization.

47791844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11947965 (or 11947963 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 47791844 is about 6913.1645431018. The cubic root of 47791844 is about 362.8980176800.

The spelling of 47791844 in words is "forty-seven million, seven hundred ninety-one thousand, eight hundred forty-four".