47891907 has 48 divisors (see below), whose sum is σ = 84756672. Its totient is φ = 25436160.

The previous prime is 47891903. The next prime is 47891917. The reversal of 47891907 is 70919874.

47891907 is a `hidden beast` number, since 478 + 91 + 90 + 7 = 666.

It is not a de Polignac number, because 47891907 - 2² = 47891903 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (47891903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103657 + ... + 104117.

It is an arithmetic number, because the mean of its divisors is an integer number (1765764).

Almost surely, 2^47891907 is an apocalyptic number.

47891907 is a deficient number, since it is larger than the sum of its proper divisors (36864765).

47891907 is a wasteful number, since it uses less digits than its factorization.

47891907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 585 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 47891907 is about 6920.3978931850. The cubic root of 47891907 is about 363.1511107312.

The spelling of 47891907 in words is "forty-seven million, eight hundred ninety-one thousand, nine hundred seven".