47239827 has 4 divisors (see below), whose sum is σ = 62986440. Its totient is φ = 31493216.

The previous prime is 47239813. The next prime is 47239859. The reversal of 47239827 is 72893274.

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

It is a cyclic number.

It is not a de Polignac number, because 47239827 - 2¹⁸ = 46977683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47239627) 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, 7873302 + ... + 7873307.

It is an arithmetic number, because the mean of its divisors is an integer number (15746610).

Almost surely, 2^47239827 is an apocalyptic number.

47239827 is a deficient number, since it is larger than the sum of its proper divisors (15746613).

47239827 is a wasteful number, since it uses less digits than its factorization.

47239827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15746612.

The product of its digits is 169344, while the sum is 42.

The square root of 47239827 is about 6873.1235257341. The cubic root of 47239827 is about 361.4953923913.

The spelling of 47239827 in words is "forty-seven million, two hundred thirty-nine thousand, eight hundred twenty-seven".