201999929 has 2 divisors, whose sum is σ = 201999930. Its totient is φ = 201999928.

The previous prime is 201999923. The next prime is 201999971. The reversal of 201999929 is 929999102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180284329 + 21715600 = 13427^2 + 4660^2 .

It is a cyclic number.

It is not a de Polignac number, because 201999929 - 2⁴ = 201999913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201999923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100999964 + 100999965.

It is an arithmetic number, because the mean of its divisors is an integer number (100999965).

Almost surely, 2^201999929 is an apocalyptic number.

It is an amenable number.

201999929 is a deficient number, since it is larger than the sum of its proper divisors (1).

201999929 is an equidigital number, since it uses as much as digits as its factorization.

201999929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 201999929 is about 14212.6679057804. The cubic root of 201999929 is about 586.7463621000.

The spelling of 201999929 in words is "two hundred one million, nine hundred ninety-nine thousand, nine hundred twenty-nine".