47989166389 has 12 divisors (see below), whose sum is σ = 51044331364. Its totient is φ = 45082058112.

The previous prime is 47989166387. The next prime is 47989166417. The reversal of 47989166389 is 98366198974.

It can be written as a sum of positive squares in 6 ways, for example, as 5046965764 + 42942200625 = 71042^2 + 207225^2 .

It is not a de Polignac number, because 47989166389 - 2¹ = 47989166387 is a prime.

It is a super-2 number, since 2×47989166389² (a number of 22 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 (47989166383) 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, 739992 + ... + 802225.

Almost surely, 2^47989166389 is an apocalyptic number.

It is an amenable number.

47989166389 is a deficient number, since it is larger than the sum of its proper divisors (3055164975).

47989166389 is a wasteful number, since it uses less digits than its factorization.

47989166389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542312 (or 1542283 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 70.

The spelling of 47989166389 in words is "forty-seven billion, nine hundred eighty-nine million, one hundred sixty-six thousand, three hundred eighty-nine".