29990 has 8 divisors (see below), whose sum is σ = 54000. Its totient is φ = 11992.

The previous prime is 29989. The next prime is 30011. The reversal of 29990 is 9992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1490 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (6750).

2²⁹⁹⁹⁰ is an apocalyptic number.

29990 is a deficient number, since it is larger than the sum of its proper divisors (24010).

29990 is a wasteful number, since it uses less digits than its factorization.

29990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 29990 is about 173.1762108374. The cubic root of 29990 is about 31.0688721953.

The spelling of 29990 in words is "twenty-nine thousand, nine hundred ninety".