47471805 has 16 divisors (see below), whose sum is σ = 84394560. Its totient is φ = 25318224.

The previous prime is 47471797. The next prime is 47471821. The reversal of 47471805 is 50817474.

47471805 is a `hidden beast` number, since 474 + 7 + 180 + 5 = 666.

It is not a de Polignac number, because 47471805 - 2³ = 47471797 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 47471805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175687 + ... + 175956.

It is an arithmetic number, because the mean of its divisors is an integer number (5274660).

Almost surely, 2^47471805 is an apocalyptic number.

47471805 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47471805 is a deficient number, since it is larger than the sum of its proper divisors (36922755).

47471805 is a wasteful number, since it uses less digits than its factorization.

47471805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351657 (or 351651 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 47471805 is about 6889.9785921293. The cubic root of 47471805 is about 362.0861515699.

The spelling of 47471805 in words is "forty-seven million, four hundred seventy-one thousand, eight hundred five".