2912320689 has 4 divisors (see below), whose sum is σ = 3883094256. Its totient is φ = 1941547124.

The previous prime is 2912320687. The next prime is 2912320709. The reversal of 2912320689 is 9860232192.

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 2912320689 - 2¹ = 2912320687 is a prime.

It is a super-2 number, since 2×2912320689² = 16963223591154869442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2912320689.

It is not an unprimeable number, because it can be changed into a prime (2912320687) 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, 485386779 + ... + 485386784.

It is an arithmetic number, because the mean of its divisors is an integer number (970773564).

Almost surely, 2^2912320689 is an apocalyptic number.

It is an amenable number.

2912320689 is a deficient number, since it is larger than the sum of its proper divisors (970773567).

2912320689 is an equidigital number, since it uses as much as digits as its factorization.

2912320689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970773566.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2912320689 is about 53965.9215524019. The cubic root of 2912320689 is about 1428.0598150489.

The spelling of 2912320689 in words is "two billion, nine hundred twelve million, three hundred twenty thousand, six hundred eighty-nine".