2978989869269 has 4 divisors (see below), whose sum is σ = 2978998653120. Its totient is φ = 2978981085420.

The previous prime is 2978989869263. The next prime is 2978989869277. The reversal of 2978989869269 is 9629689898792.

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 2978989869269 - 2¹⁶ = 2978989803733 is a prime.

It is a super-2 number, since 2×2978989869269² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978989869263) 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, 3861887 + ... + 4568604.

It is an arithmetic number, because the mean of its divisors is an integer number (744749663280).

Almost surely, 2^{2978989869269} is an apocalyptic number.

It is an amenable number.

2978989869269 is a deficient number, since it is larger than the sum of its proper divisors (8783851).

2978989869269 is an equidigital number, since it uses as much as digits as its factorization.

2978989869269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783850.

The product of its digits is 30474952704, while the sum is 92.

The spelling of 2978989869269 in words is "two trillion, nine hundred seventy-eight billion, nine hundred eighty-nine million, eight hundred sixty-nine thousand, two hundred sixty-nine".