47909474 has 4 divisors (see below), whose sum is σ = 71864214. Its totient is φ = 23954736.

The previous prime is 47909473. The next prime is 47909503. The reversal of 47909474 is 47490974.

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

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 368449 = 6895^2 + 607^2 .

It is not an unprimeable number, because it can be changed into a prime (47909473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11977367 + ... + 11977370.

Almost surely, 2^47909474 is an apocalyptic number.

47909474 is a deficient number, since it is larger than the sum of its proper divisors (23954740).

47909474 is a wasteful number, since it uses less digits than its factorization.

47909474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23954739.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 47909474 is about 6921.6669957460. Note that the first 3 decimals coincide. The cubic root of 47909474 is about 363.1955072073.

The spelling of 47909474 in words is "forty-seven million, nine hundred nine thousand, four hundred seventy-four".