47803409 has 2 divisors, whose sum is σ = 47803410. Its totient is φ = 47803408.

The previous prime is 47803391. The next prime is 47803421. The reversal of 47803409 is 90430874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 20502784 = 5225^2 + 4528^2 .

It is a cyclic number.

It is not a de Polignac number, because 47803409 - 2⁸ = 47803153 is a prime.

It is not a weakly prime, because it can be changed into another prime (47803489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23901704 + 23901705.

It is an arithmetic number, because the mean of its divisors is an integer number (23901705).

Almost surely, 2^47803409 is an apocalyptic number.

It is an amenable number.

47803409 is a deficient number, since it is larger than the sum of its proper divisors (1).

47803409 is an equidigital number, since it uses as much as digits as its factorization.

47803409 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 47803409 is about 6914.0009401214. Note that the first 3 decimals coincide. The cubic root of 47803409 is about 362.9272875075.

The spelling of 47803409 in words is "forty-seven million, eight hundred three thousand, four hundred nine".