47641009 has 4 divisors (see below), whose sum is σ = 51305716. Its totient is φ = 43976304.

The previous prime is 47641007. The next prime is 47641019. The reversal of 47641009 is 90014674.

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 27793984 + 19847025 = 5272^2 + 4455^2 .

It is a cyclic number.

It is not a de Polignac number, because 47641009 - 2¹ = 47641007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47641007) 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, 1832334 + ... + 1832359.

It is an arithmetic number, because the mean of its divisors is an integer number (12826429).

Almost surely, 2^47641009 is an apocalyptic number.

It is an amenable number.

47641009 is a deficient number, since it is larger than the sum of its proper divisors (3664707).

47641009 is a wasteful number, since it uses less digits than its factorization.

47641009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664706.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 47641009 is about 6902.2466632250. The cubic root of 47641009 is about 362.5158366446.

The spelling of 47641009 in words is "forty-seven million, six hundred forty-one thousand, nine".