513899387 has 2 divisors, whose sum is σ = 513899388. Its totient is φ = 513899386.

The previous prime is 513899317. The next prime is 513899411. The reversal of 513899387 is 783998315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513899387 - 2¹⁶ = 513833851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (513899317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256949693 + 256949694.

It is an arithmetic number, because the mean of its divisors is an integer number (256949694).

Almost surely, 2^513899387 is an apocalyptic number.

513899387 is a deficient number, since it is larger than the sum of its proper divisors (1).

513899387 is an equidigital number, since it uses as much as digits as its factorization.

513899387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 513899387 is about 22669.3490643203. The cubic root of 513899387 is about 800.9880432732.

The spelling of 513899387 in words is "five hundred thirteen million, eight hundred ninety-nine thousand, three hundred eighty-seven".