47478863 has 2 divisors, whose sum is σ = 47478864. Its totient is φ = 47478862.

The previous prime is 47478859. The next prime is 47478869. The reversal of 47478863 is 36887474.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47478863 - 2² = 47478859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47478869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23739431 + 23739432.

It is an arithmetic number, because the mean of its divisors is an integer number (23739432).

Almost surely, 2^47478863 is an apocalyptic number.

47478863 is a deficient number, since it is larger than the sum of its proper divisors (1).

47478863 is an equidigital number, since it uses as much as digits as its factorization.

47478863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 47.

The square root of 47478863 is about 6890.4907662662. The cubic root of 47478863 is about 362.1040953958.

The spelling of 47478863 in words is "forty-seven million, four hundred seventy-eight thousand, eight hundred sixty-three".