970289521 has 4 divisors (see below), whose sum is σ = 971489700. Its totient is φ = 969089344.

The previous prime is 970289513. The next prime is 970289531. The reversal of 970289521 is 125982079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125982079 = 1061 ⋅118739.

It can be written as a sum of positive squares in 2 ways, for example, as 890365921 + 79923600 = 29839^2 + 8940^2 .

It is a cyclic number.

It is not a de Polignac number, because 970289521 - 2³ = 970289513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970289531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598876 + ... + 600493.

It is an arithmetic number, because the mean of its divisors is an integer number (242872425).

Almost surely, 2^970289521 is an apocalyptic number.

It is an amenable number.

970289521 is a deficient number, since it is larger than the sum of its proper divisors (1200179).

970289521 is a wasteful number, since it uses less digits than its factorization.

970289521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200178.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 970289521 is about 31149.4706375566. The cubic root of 970289521 is about 989.9967761688.

The spelling of 970289521 in words is "nine hundred seventy million, two hundred eighty-nine thousand, five hundred twenty-one".