970816109 has 4 divisors (see below), whose sum is σ = 979407516. Its totient is φ = 962224704.

The previous prime is 970816087. The next prime is 970816139. The reversal of 970816109 is 901618079.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901618079 = 139 ⋅6486461.

It can be written as a sum of positive squares in 2 ways, for example, as 92582884 + 878233225 = 9622^2 + 29635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-970816109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (970816139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4295534 + ... + 4295759.

It is an arithmetic number, because the mean of its divisors is an integer number (244851879).

Almost surely, 2^970816109 is an apocalyptic number.

It is an amenable number.

970816109 is a deficient number, since it is larger than the sum of its proper divisors (8591407).

970816109 is a wasteful number, since it uses less digits than its factorization.

970816109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591406.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 970816109 is about 31157.9220905374. The cubic root of 970816109 is about 990.1758382359.

The spelling of 970816109 in words is "nine hundred seventy million, eight hundred sixteen thousand, one hundred nine".