980128249 has 3 divisors (see below), whose sum is σ = 980159557. Its totient is φ = 980096942.

The previous prime is 980128241. The next prime is 980128307. The reversal of 980128249 is 942821089.

The square root of 980128249 is 31307.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 980128249 - 2³ = 980128241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (980128241) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15654 + ... + 46960.

Almost surely, 2^980128249 is an apocalyptic number.

980128249 is the 31307-th square number.

980128249 is the 15654-th centered octagonal number.

It is an amenable number.

980128249 is a deficient number, since it is larger than the sum of its proper divisors (31308).

980128249 is an frugal number, since it uses more digits than its factorization.

980128249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62614 (or 31307 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The cubic root of 980128249 is about 993.3317158235.

Multiplying 980128249 by its product of nonzero digits (82944), we get a square (81295757485056 = 9016416²).

The spelling of 980128249 in words is "nine hundred eighty million, one hundred twenty-eight thousand, two hundred forty-nine".