47842443 has 36 divisors (see below), whose sum is σ = 77700168. Its totient is φ = 28131840.

The previous prime is 47842429. The next prime is 47842447. The reversal of 47842443 is 34424874.

It is a happy number.

It is not a de Polignac number, because 47842443 - 2¹³ = 47834251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47842398 and 47842407.

It is not an unprimeable number, because it can be changed into a prime (47842447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 135355 + ... + 135707.

It is an arithmetic number, because the mean of its divisors is an integer number (2158338).

Almost surely, 2^47842443 is an apocalyptic number.

47842443 is a deficient number, since it is larger than the sum of its proper divisors (29857725).

47842443 is a wasteful number, since it uses less digits than its factorization.

47842443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 404 counting only the distinct ones).

The product of its digits is 86016, while the sum is 36.

The square root of 47842443 is about 6916.8231869840. The cubic root of 47842443 is about 363.0260437112.

Subtracting from 47842443 its reverse (34424874), we obtain a square (13417569 = 3663²).

It can be divided in two parts, 4784 and 2443, that added together give a palindrome (7227).

The spelling of 47842443 in words is "forty-seven million, eight hundred forty-two thousand, four hundred forty-three".