9894280901 has 2 divisors, whose sum is σ = 9894280902. Its totient is φ = 9894280900.

The previous prime is 9894280859. The next prime is 9894280909. The reversal of 9894280901 is 1090824989.

It is a happy number.

It is a Cunningham number, because it is equal to 99470²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9894280900 + 1 = 99470^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 9894280901 - 2¹⁴ = 9894264517 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 9894280901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9894280909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4947140450 + 4947140451.

It is an arithmetic number, because the mean of its divisors is an integer number (4947140451).

Almost surely, 2^9894280901 is an apocalyptic number.

It is an amenable number.

9894280901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9894280901 is an equidigital number, since it uses as much as digits as its factorization.

9894280901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 9894280901 is about 99470.0000050266. Note that the first 5 decimals coincide. The cubic root of 9894280901 is about 2146.8156140809.

The spelling of 9894280901 in words is "nine billion, eight hundred ninety-four million, two hundred eighty thousand, nine hundred one".