47009797 has 2 divisors, whose sum is σ = 47009798. Its totient is φ = 47009796.

The previous prime is 47009791. The next prime is 47009839. The reversal of 47009797 is 79790074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24295041 + 22714756 = 4929^2 + 4766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47009797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47009791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23504898 + 23504899.

It is an arithmetic number, because the mean of its divisors is an integer number (23504899).

Almost surely, 2^47009797 is an apocalyptic number.

It is an amenable number.

47009797 is a deficient number, since it is larger than the sum of its proper divisors (1).

47009797 is an equidigital number, since it uses as much as digits as its factorization.

47009797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 47009797 is about 6856.3690828309. The cubic root of 47009797 is about 360.9076812144.

The spelling of 47009797 in words is "forty-seven million, nine thousand, seven hundred ninety-seven".