205902379 has 2 divisors, whose sum is σ = 205902380. Its totient is φ = 205902378.

The previous prime is 205902353. The next prime is 205902383. The reversal of 205902379 is 973209502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205902379 - 2⁷ = 205902251 is a prime.

It is not a weakly prime, because it can be changed into another prime (205902329) 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 as a sum of consecutive naturals, namely, 102951189 + 102951190.

It is an arithmetic number, because the mean of its divisors is an integer number (102951190).

Almost surely, 2^205902379 is an apocalyptic number.

205902379 is a deficient number, since it is larger than the sum of its proper divisors (1).

205902379 is an equidigital number, since it uses as much as digits as its factorization.

205902379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 205902379 is about 14349.2989027339. The cubic root of 205902379 is about 590.5007517407.

The spelling of 205902379 in words is "two hundred five million, nine hundred two thousand, three hundred seventy-nine".