47491393 has 8 divisors (see below), whose sum is σ = 51154400. Its totient is φ = 43944768.

The previous prime is 47491363. The next prime is 47491397. The reversal of 47491393 is 39319474.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 47491393 - 2¹⁷ = 47360321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47491397) 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 7 ways as a sum of consecutive naturals, for example, 28248 + ... + 29881.

It is an arithmetic number, because the mean of its divisors is an integer number (6394300).

Almost surely, 2^47491393 is an apocalyptic number.

47491393 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

47491393 is a deficient number, since it is larger than the sum of its proper divisors (3663007).

47491393 is a wasteful number, since it uses less digits than its factorization.

47491393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58191.

The product of its digits is 81648, while the sum is 40.

The square root of 47491393 is about 6891.3999303480. The cubic root of 47491393 is about 362.1359465183.

The spelling of 47491393 in words is "forty-seven million, four hundred ninety-one thousand, three hundred ninety-three".