47478893 has 24 divisors (see below), whose sum is σ = 61313760. Its totient is φ = 36345120.

The previous prime is 47478869. The next prime is 47478901. The reversal of 47478893 is 39887474.

It is not a de Polignac number, because 47478893 - 2¹⁰ = 47477869 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 (47478863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31055 + ... + 32547.

It is an arithmetic number, because the mean of its divisors is an integer number (2554740).

Almost surely, 2^47478893 is an apocalyptic number.

It is an amenable number.

47478893 is a deficient number, since it is larger than the sum of its proper divisors (13834867).

47478893 is a wasteful number, since it uses less digits than its factorization.

47478893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577 (or 1570 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 47478893 is about 6890.4929431790. The cubic root of 47478893 is about 362.1041716622.

The spelling of 47478893 in words is "forty-seven million, four hundred seventy-eight thousand, eight hundred ninety-three".