29438813 has 4 divisors (see below), whose sum is σ = 29459808. Its totient is φ = 29417820.

The previous prime is 29438753. The next prime is 29438819. The reversal of 29438813 is 31883492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29438813 - 2⁸ = 29438557 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 (29438819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231 + ... + 11252.

It is an arithmetic number, because the mean of its divisors is an integer number (7364952).

Almost surely, 2^29438813 is an apocalyptic number.

It is an amenable number.

29438813 is a deficient number, since it is larger than the sum of its proper divisors (20995).

29438813 is a wasteful number, since it uses less digits than its factorization.

29438813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20994.

The product of its digits is 41472, while the sum is 38.

The square root of 29438813 is about 5425.7546018964. The cubic root of 29438813 is about 308.7735552191.

The spelling of 29438813 in words is "twenty-nine million, four hundred thirty-eight thousand, eight hundred thirteen".