29868673989 has 32 divisors (see below), whose sum is σ = 49660600320. Its totient is φ = 15513451200.

The previous prime is 29868673981. The next prime is 29868673997. The reversal of 29868673989 is 98937686892.

It is an interprime number because it is at equal distance from previous prime (29868673981) and next prime (29868673997).

It is not a de Polignac number, because 29868673989 - 2³ = 29868673981 is a prime.

It is a super-2 number, since 2×29868673989² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29868673989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29868673981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2366307 + ... + 2378895.

It is an arithmetic number, because the mean of its divisors is an integer number (1551893760).

Almost surely, 2^29868673989 is an apocalyptic number.

It is an amenable number.

29868673989 is a deficient number, since it is larger than the sum of its proper divisors (19791926331).

29868673989 is a wasteful number, since it uses less digits than its factorization.

29868673989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22881.

The product of its digits is 564350976, while the sum is 75.

The spelling of 29868673989 in words is "twenty-nine billion, eight hundred sixty-eight million, six hundred seventy-three thousand, nine hundred eighty-nine".