99989963 has 2 divisors, whose sum is σ = 99989964. Its totient is φ = 99989962.

The previous prime is 99989909. The next prime is 99989983. The reversal of 99989963 is 36998999.

It is a strong prime.

It is an emirp because it is prime and its reverse (36998999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99989963 - 2¹⁴ = 99973579 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99989896 and 99989905.

It is not a weakly prime, because it can be changed into another prime (99989983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994981 + 49994982.

It is an arithmetic number, because the mean of its divisors is an integer number (49994982).

Almost surely, 2^99989963 is an apocalyptic number.

99989963 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989963 is an equidigital number, since it uses as much as digits as its factorization.

99989963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8503056, while the sum is 62.

The square root of 99989963 is about 9999.4981374067. The cubic root of 99989963 is about 464.1433536327.

It can be divided in two parts, 9998996 and 3, that added together give a palindrome (9998999).

The spelling of 99989963 in words is "ninety-nine million, nine hundred eighty-nine thousand, nine hundred sixty-three".