47091393 has 12 divisors (see below), whose sum is σ = 68512080. Its totient is φ = 31167576.

The previous prime is 47091383. The next prime is 47091403. The reversal of 47091393 is 39319074.

47091393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47091383) and next prime (47091403).

It is not a de Polignac number, because 47091393 - 2⁸ = 47091137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47091323) 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 11 ways as a sum of consecutive naturals, for example, 17571 + ... + 20072.

It is an arithmetic number, because the mean of its divisors is an integer number (5709340).

Almost surely, 2^47091393 is an apocalyptic number.

It is an amenable number.

47091393 is a deficient number, since it is larger than the sum of its proper divisors (21420687).

47091393 is a wasteful number, since it uses less digits than its factorization.

47091393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37788 (or 37785 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 47091393 is about 6862.3168828028. The cubic root of 47091393 is about 361.1163724747.

The spelling of 47091393 in words is "forty-seven million, ninety-one thousand, three hundred ninety-three".