9997162109 has 4 divisors (see below), whose sum is σ = 10905995040. Its totient is φ = 9088329180.

The previous prime is 9997162079. The next prime is 9997162121. The reversal of 9997162109 is 9012617999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9997162109 - 2²⁴ = 9980384893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997162139) 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, 454416449 + ... + 454416470.

It is an arithmetic number, because the mean of its divisors is an integer number (2726498760).

Almost surely, 2^9997162109 is an apocalyptic number.

It is an amenable number.

9997162109 is a deficient number, since it is larger than the sum of its proper divisors (908832931).

9997162109 is a wasteful number, since it uses less digits than its factorization.

9997162109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908832930.

The product of its (nonzero) digits is 551124, while the sum is 53.

The square root of 9997162109 is about 99985.8095381540. The cubic root of 9997162109 is about 2154.2308690560.

The spelling of 9997162109 in words is "nine billion, nine hundred ninety-seven million, one hundred sixty-two thousand, one hundred nine".