204081929 has 2 divisors, whose sum is σ = 204081930. Its totient is φ = 204081928.

The previous prime is 204081877. The next prime is 204081931. The reversal of 204081929 is 929180402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169000000 + 35081929 = 13000^2 + 5923^2 .

It is a cyclic number.

It is not a de Polignac number, because 204081929 - 2¹² = 204077833 is a prime.

It is a super-2 number, since 2×204081929² = 83298867488722082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 204081931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204081949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102040964 + 102040965.

It is an arithmetic number, because the mean of its divisors is an integer number (102040965).

Almost surely, 2^204081929 is an apocalyptic number.

It is an amenable number.

204081929 is a deficient number, since it is larger than the sum of its proper divisors (1).

204081929 is an equidigital number, since it uses as much as digits as its factorization.

204081929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 204081929 is about 14285.7246578534. The cubic root of 204081929 is about 588.7553278067.

The spelling of 204081929 in words is "two hundred four million, eighty-one thousand, nine hundred twenty-nine".