7989769674 has 24 divisors (see below), whose sum is σ = 17375531940. Its totient is φ = 2653354368.

The previous prime is 7989769673. The next prime is 7989769679. The reversal of 7989769674 is 4769679897.

It can be written as a sum of positive squares in 2 ways, for example, as 5499260649 + 2490509025 = 74157^2 + 49905^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7989769673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 820207 + ... + 829890.

Almost surely, 2^7989769674 is an apocalyptic number.

7989769674 is an abundant number, since it is smaller than the sum of its proper divisors (9385762266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7989769674 is a wasteful number, since it uses less digits than its factorization.

7989769674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650374 (or 1650371 counting only the distinct ones).

The product of its digits is 288054144, while the sum is 72.

The square root of 7989769674 is about 89385.5115440976. The cubic root of 7989769674 is about 1999.1471091737.

The spelling of 7989769674 in words is "seven billion, nine hundred eighty-nine million, seven hundred sixty-nine thousand, six hundred seventy-four".