29998207 has 4 divisors (see below), whose sum is σ = 31577080. Its totient is φ = 28419336.

The previous prime is 29998181. The next prime is 29998237. The reversal of 29998207 is 70289992.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29998207 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 (29998237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789408 + ... + 789445.

It is an arithmetic number, because the mean of its divisors is an integer number (7894270).

Almost surely, 2^29998207 is an apocalyptic number.

29998207 is a deficient number, since it is larger than the sum of its proper divisors (1578873).

29998207 is a wasteful number, since it uses less digits than its factorization.

29998207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578872.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 29998207 is about 5477.0618948484. The cubic root of 29998207 is about 310.7170601744.

The spelling of 29998207 in words is "twenty-nine million, nine hundred ninety-eight thousand, two hundred seven".