47857379 has 4 divisors (see below), whose sum is σ = 47904480. Its totient is φ = 47810280.

The previous prime is 47857351. The next prime is 47857393. The reversal of 47857379 is 97375874.

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-47857379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47857339) 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, 21992 + ... + 24069.

It is an arithmetic number, because the mean of its divisors is an integer number (11976120).

Almost surely, 2^47857379 is an apocalyptic number.

47857379 is a deficient number, since it is larger than the sum of its proper divisors (47101).

47857379 is a wasteful number, since it uses less digits than its factorization.

47857379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47100.

The product of its digits is 1481760, while the sum is 50.

The square root of 47857379 is about 6917.9027891407. The cubic root of 47857379 is about 363.0638176520.

The spelling of 47857379 in words is "forty-seven million, eight hundred fifty-seven thousand, three hundred seventy-nine".