47191239 has 12 divisors (see below), whose sum is σ = 71129136. Its totient is φ = 30092832.

The previous prime is 47191237. The next prime is 47191241. The reversal of 47191239 is 93219174.

It is an interprime number because it is at equal distance from previous prime (47191237) and next prime (47191241).

It is not a de Polignac number, because 47191239 - 2¹ = 47191237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47191237) 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 11 ways as a sum of consecutive naturals, for example, 113782 + ... + 114195.

It is an arithmetic number, because the mean of its divisors is an integer number (5927428).

Almost surely, 2^47191239 is an apocalyptic number.

47191239 is a deficient number, since it is larger than the sum of its proper divisors (23937897).

47191239 is a wasteful number, since it uses less digits than its factorization.

47191239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228006 (or 228003 counting only the distinct ones).

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

The square root of 47191239 is about 6869.5879789111. The cubic root of 47191239 is about 361.3714125170.

The spelling of 47191239 in words is "forty-seven million, one hundred ninety-one thousand, two hundred thirty-nine".