514969391 has 2 divisors, whose sum is σ = 514969392. Its totient is φ = 514969390.

The previous prime is 514969387. The next prime is 514969417. The reversal of 514969391 is 193969415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 514969391 - 2² = 514969387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (514969361) 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, 257484695 + 257484696.

It is an arithmetic number, because the mean of its divisors is an integer number (257484696).

Almost surely, 2^514969391 is an apocalyptic number.

514969391 is a deficient number, since it is larger than the sum of its proper divisors (1).

514969391 is an equidigital number, since it uses as much as digits as its factorization.

514969391 is an odious number, because the sum of its binary digits is odd.

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

The square root of 514969391 is about 22692.9370289524. The cubic root of 514969391 is about 801.5435776072.

The spelling of 514969391 in words is "five hundred fourteen million, nine hundred sixty-nine thousand, three hundred ninety-one".