29871482989 has 4 divisors (see below), whose sum is σ = 29871967356. Its totient is φ = 29870998624.

The previous prime is 29871482983. The next prime is 29871482999. The reversal of 29871482989 is 98928417892.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16953342025 + 12918140964 = 130205^2 + 113658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29871482989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29871482983) 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, 133384 + ... + 278449.

It is an arithmetic number, because the mean of its divisors is an integer number (7467991839).

Almost surely, 2^29871482989 is an apocalyptic number.

It is an amenable number.

29871482989 is a deficient number, since it is larger than the sum of its proper divisors (484367).

29871482989 is an equidigital number, since it uses as much as digits as its factorization.

29871482989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484366.

The product of its digits is 41803776, while the sum is 67.

The spelling of 29871482989 in words is "twenty-nine billion, eight hundred seventy-one million, four hundred eighty-two thousand, nine hundred eighty-nine".