47211938 has 8 divisors (see below), whose sum is σ = 70891932. Its totient is φ = 23581296.

The previous prime is 47211911. The next prime is 47211943. The reversal of 47211938 is 83911274.

It can be written as a sum of positive squares in 2 ways, for example, as 46144849 + 1067089 = 6793^2 + 1033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 47211898 and 47211907.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9845 + ... + 13832.

Almost surely, 2^47211938 is an apocalyptic number.

47211938 is a deficient number, since it is larger than the sum of its proper divisors (23679994).

47211938 is a wasteful number, since it uses less digits than its factorization.

47211938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24676.

The product of its digits is 12096, while the sum is 35.

The square root of 47211938 is about 6871.0943815378. The cubic root of 47211938 is about 361.4242396495.

The spelling of 47211938 in words is "forty-seven million, two hundred eleven thousand, nine hundred thirty-eight".