47669845 has 4 divisors (see below), whose sum is σ = 57203820. Its totient is φ = 38135872.

The previous prime is 47669837. The next prime is 47669857. The reversal of 47669845 is 54896674.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10982596 + 36687249 = 3314^2 + 6057^2 .

It is a cyclic number.

It is not a de Polignac number, because 47669845 - 2³ = 47669837 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4766980 + ... + 4766989.

It is an arithmetic number, because the mean of its divisors is an integer number (14300955).

Almost surely, 2^47669845 is an apocalyptic number.

It is an amenable number.

47669845 is a deficient number, since it is larger than the sum of its proper divisors (9533975).

47669845 is an equidigital number, since it uses as much as digits as its factorization.

47669845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533974.

The product of its digits is 1451520, while the sum is 49.

The square root of 47669845 is about 6904.3352323015. The cubic root of 47669845 is about 362.5889627077.

The spelling of 47669845 in words is "forty-seven million, six hundred sixty-nine thousand, eight hundred forty-five".