47427643 has 4 divisors (see below), whose sum is σ = 47871000. Its totient is φ = 46984288.

The previous prime is 47427641. The next prime is 47427649. The reversal of 47427643 is 34672474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34672474 = 2 ⋅17336237.

It is a cyclic number.

It is not a de Polignac number, because 47427643 - 2¹ = 47427641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47427641) 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, 221518 + ... + 221731.

It is an arithmetic number, because the mean of its divisors is an integer number (11967750).

Almost surely, 2^47427643 is an apocalyptic number.

47427643 is a deficient number, since it is larger than the sum of its proper divisors (443357).

47427643 is a wasteful number, since it uses less digits than its factorization.

47427643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443356.

The product of its digits is 112896, while the sum is 37.

The square root of 47427643 is about 6886.7730469357. The cubic root of 47427643 is about 361.9738364127.

The spelling of 47427643 in words is "forty-seven million, four hundred twenty-seven thousand, six hundred forty-three".