29999873 has 2 divisors, whose sum is σ = 29999874. Its totient is φ = 29999872.

The previous prime is 29999839. The next prime is 29999881. The reversal of 29999873 is 37899992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17833729 + 12166144 = 4223^2 + 3488^2 .

It is a cyclic number.

It is not a de Polignac number, because 29999873 - 2²⁰ = 28951297 is a prime.

It is a super-2 number, since 2×29999873² = 1799984760032258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (29999273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14999936 + 14999937.

It is an arithmetic number, because the mean of its divisors is an integer number (14999937).

Almost surely, 2^29999873 is an apocalyptic number.

It is an amenable number.

29999873 is a deficient number, since it is larger than the sum of its proper divisors (1).

29999873 is an equidigital number, since it uses as much as digits as its factorization.

29999873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 56.

The square root of 29999873 is about 5477.2139815786. The cubic root of 29999873 is about 310.7228121297.

The spelling of 29999873 in words is "twenty-nine million, nine hundred ninety-nine thousand, eight hundred seventy-three".