47461409 has 2 divisors, whose sum is σ = 47461410. Its totient is φ = 47461408.

The previous prime is 47461369. The next prime is 47461423. The reversal of 47461409 is 90416474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41473600 + 5987809 = 6440^2 + 2447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47461409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (47461439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23730704 + 23730705.

It is an arithmetic number, because the mean of its divisors is an integer number (23730705).

Almost surely, 2^47461409 is an apocalyptic number.

It is an amenable number.

47461409 is a deficient number, since it is larger than the sum of its proper divisors (1).

47461409 is an equidigital number, since it uses as much as digits as its factorization.

47461409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 47461409 is about 6889.2241217716. The cubic root of 47461409 is about 362.0597181782.

The spelling of 47461409 in words is "forty-seven million, four hundred sixty-one thousand, four hundred nine".