47844749393 has 6 divisors (see below), whose sum is σ = 55656137106. Its totient is φ = 41009785152.

The previous prime is 47844749369. The next prime is 47844749399. The reversal of 47844749393 is 39394744874.

It can be written as a sum of positive squares in only one way, i.e., 37762982929 + 10081766464 = 194327^2 + 100408^2 .

It is not a de Polignac number, because 47844749393 - 2³² = 43549782097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47844749399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 488211680 + ... + 488211777.

It is an arithmetic number, because the mean of its divisors is an integer number (9276022851).

Almost surely, 2^47844749393 is an apocalyptic number.

It is an amenable number.

47844749393 is a deficient number, since it is larger than the sum of its proper divisors (7811387713).

47844749393 is an equidigital number, since it uses as much as digits as its factorization.

47844749393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976423471 (or 976423464 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 62.

The spelling of 47844749393 in words is "forty-seven billion, eight hundred forty-four million, seven hundred forty-nine thousand, three hundred ninety-three".