9890150709321 has 135 divisors (see below), whose sum is σ = 15938373842391. Its totient is φ = 6110892624096.

The previous prime is 9890150709293. The next prime is 9890150709401. The reversal of 9890150709321 is 1239070510989.

The square root of 9890150709321 is 3144861.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7129781127225 + 2760369582096 = 2670165^2 + 1661436^2 .

It is not a de Polignac number, because 9890150709321 - 2¹⁷ = 9890150578249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9890150719321) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 28501875070 + ... + 28501875416.

Almost surely, 2^{9890150709321} is an apocalyptic number.

9890150709321 is the 3144861-st square number.

9890150709321 is the 1572431-st centered octagonal number.

It is an amenable number.

9890150709321 is a deficient number, since it is larger than the sum of its proper divisors (6048223133070).

9890150709321 is an frugal number, since it uses more digits than its factorization.

9890150709321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 9890150709321 in words is "nine trillion, eight hundred ninety billion, one hundred fifty million, seven hundred nine thousand, three hundred twenty-one".