9800145 has 12 divisors (see below), whose sum is σ = 16986996. Its totient is φ = 5226720.

The previous prime is 9800137. The next prime is 9800149. The reversal of 9800145 is 5410089.

It can be written as a sum of positive squares in 2 ways, for example, as 7403841 + 2396304 = 2721^2 + 1548^2 .

It is not a de Polignac number, because 9800145 - 2³ = 9800137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9800149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108846 + ... + 108935.

It is an arithmetic number, because the mean of its divisors is an integer number (1415583).

Almost surely, 2^9800145 is an apocalyptic number.

It is an amenable number.

9800145 is a deficient number, since it is larger than the sum of its proper divisors (7186851).

9800145 is a wasteful number, since it uses less digits than its factorization.

9800145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217792 (or 217789 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 9800145 is about 3130.5183276895. The cubic root of 9800145 is about 213.9985515376.

The spelling of 9800145 in words is "nine million, eight hundred thousand, one hundred forty-five".