9801149 has 2 divisors, whose sum is σ = 9801150. Its totient is φ = 9801148.

The previous prime is 9801137. The next prime is 9801157. The reversal of 9801149 is 9411089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5040025 + 4761124 = 2245^2 + 2182^2 .

It is a cyclic number.

It is not a de Polignac number, because 9801149 - 2⁴ = 9801133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9801109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900574 + 4900575.

It is an arithmetic number, because the mean of its divisors is an integer number (4900575).

Almost surely, 2^9801149 is an apocalyptic number.

It is an amenable number.

9801149 is a deficient number, since it is larger than the sum of its proper divisors (1).

9801149 is an equidigital number, since it uses as much as digits as its factorization.

9801149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 9801149 is about 3130.6786804142. The cubic root of 9801149 is about 214.0058591577.

The spelling of 9801149 in words is "nine million, eight hundred one thousand, one hundred forty-nine".