47678493 has 4 divisors (see below), whose sum is σ = 63571328. Its totient is φ = 31785660.

The previous prime is 47678479. The next prime is 47678503. The reversal of 47678493 is 39487674.

It is a happy number.

47678493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47678493 - 2⁵ = 47678461 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 (47678593) 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 3 ways as a sum of consecutive naturals, for example, 7946413 + ... + 7946418.

It is an arithmetic number, because the mean of its divisors is an integer number (15892832).

Almost surely, 2^47678493 is an apocalyptic number.

It is an amenable number.

47678493 is a deficient number, since it is larger than the sum of its proper divisors (15892835).

47678493 is a wasteful number, since it uses less digits than its factorization.

47678493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15892834.

The product of its digits is 1016064, while the sum is 48.

The square root of 47678493 is about 6904.9614770830. The cubic root of 47678493 is about 362.6108876776.

The spelling of 47678493 in words is "forty-seven million, six hundred seventy-eight thousand, four hundred ninety-three".