29999973 has 4 divisors (see below), whose sum is σ = 39999968. Its totient is φ = 19999980.

The previous prime is 29999947. The next prime is 29999989. The reversal of 29999973 is 37999992.

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 not a de Polignac number, because 29999973 - 2⁵ = 29999941 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 (29999903) 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, 4999993 + ... + 4999998.

It is an arithmetic number, because the mean of its divisors is an integer number (9999992).

Almost surely, 2^29999973 is an apocalyptic number.

It is an amenable number.

29999973 is a deficient number, since it is larger than the sum of its proper divisors (9999995).

29999973 is an equidigital number, since it uses as much as digits as its factorization.

29999973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999994.

The product of its digits is 2480058, while the sum is 57.

The square root of 29999973 is about 5477.2231102996. The cubic root of 29999973 is about 310.7231573784.

The spelling of 29999973 in words is "twenty-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".