47211939 has 12 divisors (see below), whose sum is σ = 71160336. Its totient is φ = 30106032.

The previous prime is 47211911. The next prime is 47211943. The reversal of 47211939 is 93911274.

It is not a de Polignac number, because 47211939 - 2¹² = 47207843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47211959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113832 + ... + 114245.

It is an arithmetic number, because the mean of its divisors is an integer number (5930028).

Almost surely, 2^47211939 is an apocalyptic number.

47211939 is a deficient number, since it is larger than the sum of its proper divisors (23948397).

47211939 is a wasteful number, since it uses less digits than its factorization.

47211939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228106 (or 228103 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 47211939 is about 6871.0944543064. The cubic root of 47211939 is about 361.4242422013.

The spelling of 47211939 in words is "forty-seven million, two hundred eleven thousand, nine hundred thirty-nine".