47493791 has 4 divisors (see below), whose sum is σ = 47510472. Its totient is φ = 47477112.

The previous prime is 47493739. The next prime is 47493811. The reversal of 47493791 is 19739474.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47493791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47493191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2876 + ... + 10161.

It is an arithmetic number, because the mean of its divisors is an integer number (11877618).

Almost surely, 2^47493791 is an apocalyptic number.

47493791 is a deficient number, since it is larger than the sum of its proper divisors (16681).

47493791 is a wasteful number, since it uses less digits than its factorization.

47493791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16680.

The product of its digits is 190512, while the sum is 44.

The square root of 47493791 is about 6891.5739131203. The cubic root of 47493791 is about 362.1420415693.

It can be divided in two parts, 47493 and 791, that added together give a palindrome (48284).

The spelling of 47493791 in words is "forty-seven million, four hundred ninety-three thousand, seven hundred ninety-one".