47739427 has 4 divisors (see below), whose sum is σ = 48115456. Its totient is φ = 47363400.

The previous prime is 47739397. The next prime is 47739469. The reversal of 47739427 is 72493774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72493774 = 2 ⋅36246887.

It is a cyclic number.

It is not a de Polignac number, because 47739427 - 2¹¹ = 47737379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47739487) 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, 187824 + ... + 188077.

It is an arithmetic number, because the mean of its divisors is an integer number (12028864).

Almost surely, 2^47739427 is an apocalyptic number.

47739427 is a deficient number, since it is larger than the sum of its proper divisors (376029).

47739427 is a wasteful number, since it uses less digits than its factorization.

47739427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376028.

The product of its digits is 296352, while the sum is 43.

The square root of 47739427 is about 6909.3724027584. The cubic root of 47739427 is about 362.7652964013.

The spelling of 47739427 in words is "forty-seven million, seven hundred thirty-nine thousand, four hundred twenty-seven".