98999965 has 4 divisors (see below), whose sum is σ = 118799964. Its totient is φ = 79199968.

The previous prime is 98999963. The next prime is 98999969. The reversal of 98999965 is 56999989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48916036 + 50083929 = 6994^2 + 7077^2 .

It is a cyclic number.

It is not a de Polignac number, because 98999965 - 2¹ = 98999963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98999897 and 98999906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98999963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9899992 + ... + 9900001.

It is an arithmetic number, because the mean of its divisors is an integer number (29699991).

Almost surely, 2^98999965 is an apocalyptic number.

It is an amenable number.

98999965 is a deficient number, since it is larger than the sum of its proper divisors (19799999).

98999965 is a wasteful number, since it uses less digits than its factorization.

98999965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19799998.

The product of its digits is 14171760, while the sum is 64.

The square root of 98999965 is about 9949.8726122499. The cubic root of 98999965 is about 462.6064464024.

The spelling of 98999965 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred sixty-five".