989231149201 has 9 divisors (see below), whose sum is σ = 991952870961. Its totient is φ = 986516883072.

The previous prime is 989231149087. The next prime is 989231149211. The reversal of 989231149201 is 102941132989.

The square root of 989231149201 is 994601.

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

It can be written as a sum of positive squares in 4 ways, for example, as 205935347601 + 783295801600 = 453801^2 + 885040^2 .

It is not a de Polignac number, because 989231149201 - 2¹⁷ = 989231018129 is a prime.

It is a super-2 number, since 2×989231149201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989231149211) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 430661085 + ... + 430663381.

Almost surely, 2^989231149201 is an apocalyptic number.

989231149201 is the 994601-st square number.

989231149201 is the 497301-st centered octagonal number.

It is an amenable number.

989231149201 is a deficient number, since it is larger than the sum of its proper divisors (2721721760).

989231149201 is an frugal number, since it uses more digits than its factorization.

989231149201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

Multiplying 989231149201 by its sum of digits (49), we get a square (48472326310849 = 6962207²).

The spelling of 989231149201 in words is "nine hundred eighty-nine billion, two hundred thirty-one million, one hundred forty-nine thousand, two hundred one".