2979987698 has 8 divisors (see below), whose sum is σ = 4732921692. Its totient is φ = 1402347136.

The previous prime is 2979987697. The next prime is 2979987701. The reversal of 2979987698 is 8967899792.

It can be written as a sum of positive squares in 2 ways, for example, as 2940133729 + 39853969 = 54223^2 + 6313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2979987697) 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, 43823315 + ... + 43823382.

Almost surely, 2^2979987698 is an apocalyptic number.

2979987698 is a deficient number, since it is larger than the sum of its proper divisors (1752933994).

2979987698 is a wasteful number, since it uses less digits than its factorization.

2979987698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87646716.

The product of its digits is 246903552, while the sum is 74.

The square root of 2979987698 is about 54589.2635781066. The cubic root of 2979987698 is about 1439.0354423374.

The spelling of 2979987698 in words is "two billion, nine hundred seventy-nine million, nine hundred eighty-seven thousand, six hundred ninety-eight".