47788474 has 4 divisors (see below), whose sum is σ = 71682714. Its totient is φ = 23894236.

The previous prime is 47788471. The next prime is 47788529. The reversal of 47788474 is 47488774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47488774 = 2 ⋅23744387.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 797449 = 6855^2 + 893^2 .

It is not an unprimeable number, because it can be changed into a prime (47788471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11947117 + ... + 11947120.

Almost surely, 2^47788474 is an apocalyptic number.

47788474 is a deficient number, since it is larger than the sum of its proper divisors (23894240).

47788474 is a wasteful number, since it uses less digits than its factorization.

47788474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23894239.

The product of its digits is 1404928, while the sum is 49.

The square root of 47788474 is about 6912.9208009350. The cubic root of 47788474 is about 362.8894876676.

The spelling of 47788474 in words is "forty-seven million, seven hundred eighty-eight thousand, four hundred seventy-four".