63998119 has 2 divisors, whose sum is σ = 63998120. Its totient is φ = 63998118.

The previous prime is 63998117. The next prime is 63998153. The reversal of 63998119 is 91189936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63998119 - 2¹ = 63998117 is a prime.

It is a super-2 number, since 2×63998119² = 8191518471076322, which contains 22 as substring.

Together with 63998117, 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 (63998111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31999059 + 31999060.

It is an arithmetic number, because the mean of its divisors is an integer number (31999060).

Almost surely, 2^63998119 is an apocalyptic number.

63998119 is a deficient number, since it is larger than the sum of its proper divisors (1).

63998119 is an equidigital number, since it uses as much as digits as its factorization.

63998119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 46.

The square root of 63998119 is about 7999.8824366362. The cubic root of 63998119 is about 399.9960812116.

It can be divided in two parts, 639981 and 19, that added together give a square (640000 = 800²).

The spelling of 63998119 in words is "sixty-three million, nine hundred ninety-eight thousand, one hundred nineteen".