47478223 has 4 divisors (see below), whose sum is σ = 51130408. Its totient is φ = 43826040.

The previous prime is 47478217. The next prime is 47478239. The reversal of 47478223 is 32287474.

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 47478223 - 2¹⁷ = 47347151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47478203) 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, 1826073 + ... + 1826098.

It is an arithmetic number, because the mean of its divisors is an integer number (12782602).

Almost surely, 2^47478223 is an apocalyptic number.

47478223 is a deficient number, since it is larger than the sum of its proper divisors (3652185).

47478223 is a wasteful number, since it uses less digits than its factorization.

47478223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652184.

The product of its digits is 75264, while the sum is 37.

The square root of 47478223 is about 6890.4443252957. Note that the first 3 decimals coincide. The cubic root of 47478223 is about 362.1024683724.

The spelling of 47478223 in words is "forty-seven million, four hundred seventy-eight thousand, two hundred twenty-three".