29009813 has 12 divisors (see below), whose sum is σ = 34660332. Its totient is φ = 24192000.

The previous prime is 29009809. The next prime is 29009863. The reversal of 29009813 is 31890092.

It can be written as a sum of positive squares in 2 ways, for example, as 25331089 + 3678724 = 5033^2 + 1918^2 .

It is not a de Polignac number, because 29009813 - 2² = 29009809 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 29009813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29009863) 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, 6188 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (2888361).

Almost surely, 2^29009813 is an apocalyptic number.

It is an amenable number.

29009813 is a deficient number, since it is larger than the sum of its proper divisors (5650519).

29009813 is a wasteful number, since it uses less digits than its factorization.

29009813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16052 (or 16045 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 29009813 is about 5386.0758442488. The cubic root of 29009813 is about 307.2663322756.

The spelling of 29009813 in words is "twenty-nine million, nine thousand, eight hundred thirteen".