47391291 has 32 divisors (see below), whose sum is σ = 74833920. Its totient is φ = 29538432.

The previous prime is 47391277. The next prime is 47391313. The reversal of 47391291 is 19219374.

47391291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47391291 - 2¹⁰ = 47390267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47391221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102126 + ... + 102588.

It is an arithmetic number, because the mean of its divisors is an integer number (2338560).

Almost surely, 2^47391291 is an apocalyptic number.

47391291 is a deficient number, since it is larger than the sum of its proper divisors (27442629).

47391291 is a wasteful number, since it uses less digits than its factorization.

47391291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 706 counting only the distinct ones).

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

The square root of 47391291 is about 6884.1332787795. The cubic root of 47391291 is about 361.8813317370.

The spelling of 47391291 in words is "forty-seven million, three hundred ninety-one thousand, two hundred ninety-one".