47939894 has 4 divisors (see below), whose sum is σ = 71909844. Its totient is φ = 23969946.

The previous prime is 47939893. The next prime is 47939909. The reversal of 47939894 is 49893974.

It is a happy number.

47939894 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47939891) 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 as a sum of consecutive naturals, namely, 11984972 + ... + 11984975.

It is an arithmetic number, because the mean of its divisors is an integer number (17977461).

Almost surely, 2^47939894 is an apocalyptic number.

47939894 is a deficient number, since it is larger than the sum of its proper divisors (23969950).

47939894 is a wasteful number, since it uses less digits than its factorization.

47939894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23969949.

The product of its digits is 1959552, while the sum is 53.

The square root of 47939894 is about 6923.8640945645. The cubic root of 47939894 is about 363.2723609681.

The spelling of 47939894 in words is "forty-seven million, nine hundred thirty-nine thousand, eight hundred ninety-four".