99982985 has 4 divisors (see below), whose sum is σ = 119979588. Its totient is φ = 79986384.

The previous prime is 99982957. The next prime is 99983017. The reversal of 99982985 is 58928999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58928999 = 349 ⋅168851.

It can be written as a sum of positive squares in 2 ways, for example, as 62980096 + 37002889 = 7936^2 + 6083^2 .

It is a cyclic number.

It is not a de Polignac number, because 99982985 - 2¹⁰ = 99981961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9998294 + ... + 9998303.

It is an arithmetic number, because the mean of its divisors is an integer number (29994897).

Almost surely, 2^99982985 is an apocalyptic number.

It is an amenable number.

99982985 is a deficient number, since it is larger than the sum of its proper divisors (19996603).

99982985 is a wasteful number, since it uses less digits than its factorization.

99982985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19996602.

The product of its digits is 4199040, while the sum is 59.

The square root of 99982985 is about 9999.1492138081. The cubic root of 99982985 is about 464.1325563234.

The spelling of 99982985 in words is "ninety-nine million, nine hundred eighty-two thousand, nine hundred eighty-five".