29668389 has 4 divisors (see below), whose sum is σ = 39557856. Its totient is φ = 19778924.

The previous prime is 29668357. The next prime is 29668391. The reversal of 29668389 is 98386692.

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 29668389 - 2⁵ = 29668357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29668399) 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 3 ways as a sum of consecutive naturals, for example, 4944729 + ... + 4944734.

It is an arithmetic number, because the mean of its divisors is an integer number (9889464).

Almost surely, 2^29668389 is an apocalyptic number.

It is an amenable number.

29668389 is a deficient number, since it is larger than the sum of its proper divisors (9889467).

29668389 is an equidigital number, since it uses as much as digits as its factorization.

29668389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889466.

The product of its digits is 1119744, while the sum is 51.

The square root of 29668389 is about 5446.8696514604. The cubic root of 29668389 is about 309.5741255777.

The spelling of 29668389 in words is "twenty-nine million, six hundred sixty-eight thousand, three hundred eighty-nine".