29999889 has 20 divisors (see below), whose sum is σ = 46766016. Its totient is φ = 19129176.

The previous prime is 29999887. The next prime is 29999899. The reversal of 29999889 is 98899992.

It is not a de Polignac number, because 29999889 - 2¹ = 29999887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29999881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6189 + ... + 9914.

Almost surely, 2^29999889 is an apocalyptic number.

It is an amenable number.

29999889 is a deficient number, since it is larger than the sum of its proper divisors (16766127).

29999889 is a wasteful number, since it uses less digits than its factorization.

29999889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16138 (or 16129 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 63.

The square root of 29999889 is about 5477.2154421750. The cubic root of 29999889 is about 310.7228673696.

The spelling of 29999889 in words is "twenty-nine million, nine hundred ninety-nine thousand, eight hundred eighty-nine".