47957847 has 8 divisors (see below), whose sum is σ = 73078656. Its totient is φ = 27404472.

The previous prime is 47957839. The next prime is 47957869. The reversal of 47957847 is 74875974.

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

It is not a de Polignac number, because 47957847 - 2³ = 47957839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47957847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47957807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141833 + ... + 1141874.

It is an arithmetic number, because the mean of its divisors is an integer number (9134832).

Almost surely, 2^47957847 is an apocalyptic number.

47957847 is a deficient number, since it is larger than the sum of its proper divisors (25120809).

47957847 is a wasteful number, since it uses less digits than its factorization.

47957847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283717.

The product of its digits is 1975680, while the sum is 51.

The square root of 47957847 is about 6925.1604313546. The cubic root of 47957847 is about 363.3177025699.

The spelling of 47957847 in words is "forty-seven million, nine hundred fifty-seven thousand, eight hundred forty-seven".