47209973 has 2 divisors, whose sum is σ = 47209974. Its totient is φ = 47209972.

The previous prime is 47209957. The next prime is 47209991. The reversal of 47209973 is 37990274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41049649 + 6160324 = 6407^2 + 2482^2 .

It is a cyclic number.

It is not a de Polignac number, because 47209973 - 2⁴ = 47209957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47209973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47209933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23604986 + 23604987.

It is an arithmetic number, because the mean of its divisors is an integer number (23604987).

Almost surely, 2^47209973 is an apocalyptic number.

It is an amenable number.

47209973 is a deficient number, since it is larger than the sum of its proper divisors (1).

47209973 is an equidigital number, since it uses as much as digits as its factorization.

47209973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 47209973 is about 6870.9513897276. The cubic root of 47209973 is about 361.4192253211.

The spelling of 47209973 in words is "forty-seven million, two hundred nine thousand, nine hundred seventy-three".