47978207 has 4 divisors (see below), whose sum is σ = 50064240. Its totient is φ = 45892176.

The previous prime is 47978191. The next prime is 47978219. The reversal of 47978207 is 70287974.

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

It is not a de Polignac number, because 47978207 - 2⁴ = 47978191 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 (47978257) 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, 1042982 + ... + 1043027.

It is an arithmetic number, because the mean of its divisors is an integer number (12516060).

Almost surely, 2^47978207 is an apocalyptic number.

47978207 is a deficient number, since it is larger than the sum of its proper divisors (2086033).

47978207 is a wasteful number, since it uses less digits than its factorization.

47978207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086032.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 47978207 is about 6926.6302774148. The cubic root of 47978207 is about 363.3691095335.

The spelling of 47978207 in words is "forty-seven million, nine hundred seventy-eight thousand, two hundred seven".