63418939 has 2 divisors, whose sum is σ = 63418940. Its totient is φ = 63418938.

The previous prime is 63418931. The next prime is 63418951. The reversal of 63418939 is 93981436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63418939 - 2³ = 63418931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63418895 and 63418904.

It is not a weakly prime, because it can be changed into another prime (63418931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31709469 + 31709470.

It is an arithmetic number, because the mean of its divisors is an integer number (31709470).

Almost surely, 2^63418939 is an apocalyptic number.

63418939 is a deficient number, since it is larger than the sum of its proper divisors (1).

63418939 is an equidigital number, since it uses as much as digits as its factorization.

63418939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 63418939 is about 7963.6008815108. The cubic root of 63418939 is about 398.7857741183.

The spelling of 63418939 in words is "sixty-three million, four hundred eighteen thousand, nine hundred thirty-nine".