63779959 has 2 divisors, whose sum is σ = 63779960. Its totient is φ = 63779958.

The previous prime is 63779957. The next prime is 63779977. The reversal of 63779959 is 95997736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63779959 - 2¹ = 63779957 is a prime.

Together with 63779957, 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 (63779951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31889979 + 31889980.

It is an arithmetic number, because the mean of its divisors is an integer number (31889980).

Almost surely, 2^63779959 is an apocalyptic number.

63779959 is a deficient number, since it is larger than the sum of its proper divisors (1).

63779959 is an equidigital number, since it uses as much as digits as its factorization.

63779959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3214890, while the sum is 55.

The square root of 63779959 is about 7986.2355963245. The cubic root of 63779959 is about 399.5410548748.

The spelling of 63779959 in words is "sixty-three million, seven hundred seventy-nine thousand, nine hundred fifty-nine".