2069489971 has 4 divisors (see below), whose sum is σ = 2136247744. Its totient is φ = 2002732200.

The previous prime is 2069489969. The next prime is 2069489987. The reversal of 2069489971 is 1799849602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2069489971 - 2¹ = 2069489969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2069489911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33378840 + ... + 33378901.

It is an arithmetic number, because the mean of its divisors is an integer number (534061936).

Almost surely, 2^2069489971 is an apocalyptic number.

2069489971 is a deficient number, since it is larger than the sum of its proper divisors (66757773).

2069489971 is an equidigital number, since it uses as much as digits as its factorization.

2069489971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66757772.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 2069489971 is about 45491.6472662840. The cubic root of 2069489971 is about 1274.3472185273.

The spelling of 2069489971 in words is "two billion, sixty-nine million, four hundred eighty-nine thousand, nine hundred seventy-one".