29990271 has 4 divisors (see below), whose sum is σ = 39987032. Its totient is φ = 19993512.

The previous prime is 29990269. The next prime is 29990291. The reversal of 29990271 is 17209992.

It is a happy number.

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

It is not a de Polignac number, because 29990271 - 2¹ = 29990269 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 (29990251) 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, 4998376 + ... + 4998381.

It is an arithmetic number, because the mean of its divisors is an integer number (9996758).

Almost surely, 2^29990271 is an apocalyptic number.

29990271 is a deficient number, since it is larger than the sum of its proper divisors (9996761).

29990271 is an equidigital number, since it uses as much as digits as its factorization.

29990271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9996760.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 29990271 is about 5476.3373709077. The cubic root of 29990271 is about 310.6896577804.

The spelling of 29990271 in words is "twenty-nine million, nine hundred ninety thousand, two hundred seventy-one".