520229999 has 2 divisors, whose sum is σ = 520230000. Its totient is φ = 520229998.

The previous prime is 520229989. The next prime is 520230023. The reversal of 520229999 is 999922025.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520229999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520229929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260114999 + 260115000.

It is an arithmetic number, because the mean of its divisors is an integer number (260115000).

Almost surely, 2^520229999 is an apocalyptic number.

520229999 is a deficient number, since it is larger than the sum of its proper divisors (1).

520229999 is an equidigital number, since it uses as much as digits as its factorization.

520229999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 520229999 is about 22808.5510061468. The cubic root of 520229999 is about 804.2636935889.

The spelling of 520229999 in words is "five hundred twenty million, two hundred twenty-nine thousand, nine hundred ninety-nine".