970509409 has 3 divisors (see below), whose sum is σ = 970540563. Its totient is φ = 970478256.

The previous prime is 970509383. The next prime is 970509431. The reversal of 970509409 is 904905079.

The square root of 970509409 is 31153.

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

970509409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 904905079 = 13 ⋅69608083.

It can be written as a sum of positive squares in only one way, i.e., 245392225 + 725117184 = 15665^2 + 26928^2 .

It is not a de Polignac number, because 970509409 - 2¹¹ = 970507361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970509479) 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, 15577 + ... + 46729.

It is an arithmetic number, because the mean of its divisors is an integer number (323513521).

Almost surely, 2^970509409 is an apocalyptic number.

970509409 is the 31153-rd square number.

970509409 is the 15577-th centered octagonal number.

It is an amenable number.

970509409 is a deficient number, since it is larger than the sum of its proper divisors (31154).

970509409 is an frugal number, since it uses more digits than its factorization.

970509409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62306 (or 31153 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The cubic root of 970509409 is about 990.0715552130.

The spelling of 970509409 in words is "nine hundred seventy million, five hundred nine thousand, four hundred nine".