96989999 has 4 divisors (see below), whose sum is σ = 99053664. Its totient is φ = 94926336.

The previous prime is 96989993. The next prime is 96990031. The reversal of 96989999 is 99998969.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-96989999 is a prime.

It is a Duffinian number.

96989999 is a modest number, since divided by 9999 gives 9698 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96989993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031762 + ... + 1031855.

It is an arithmetic number, because the mean of its divisors is an integer number (24763416).

Almost surely, 2^96989999 is an apocalyptic number.

96989999 is a deficient number, since it is larger than the sum of its proper divisors (2063665).

96989999 is a wasteful number, since it uses less digits than its factorization.

96989999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063664.

The product of its digits is 25509168, while the sum is 68.

The square root of 96989999 is about 9848.3500648586. The cubic root of 96989999 is about 459.4542977489.

The spelling of 96989999 in words is "ninety-six million, nine hundred eighty-nine thousand, nine hundred ninety-nine".