63430399 has 2 divisors, whose sum is σ = 63430400. Its totient is φ = 63430398.

The previous prime is 63430397. The next prime is 63430421. The reversal of 63430399 is 99303436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63430399 - 2¹ = 63430397 is a prime.

Together with 63430397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63430391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31715199 + 31715200.

It is an arithmetic number, because the mean of its divisors is an integer number (31715200).

Almost surely, 2^63430399 is an apocalyptic number.

63430399 is a deficient number, since it is larger than the sum of its proper divisors (1).

63430399 is an equidigital number, since it uses as much as digits as its factorization.

63430399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 63430399 is about 7964.3203727625. The cubic root of 63430399 is about 398.8097932825.

The spelling of 63430399 in words is "sixty-three million, four hundred thirty thousand, three hundred ninety-nine".