4999985 has 8 divisors (see below), whose sum is σ = 6012456.
Its totient is φ = 3991680.
The previous prime is 4999963. The next prime is 4999999. The reversal of 4999985 is 5899994.
It can be written as a sum of positive squares in 4 ways, for example, as 1763584 + 3236401 = 1328^2 + 1799^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 4999985 - 212 = 4995889 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 7 ways as a sum of consecutive naturals, for example, 3125 + ... + 4445.
It is an arithmetic number, because the mean of its divisors is an integer number (751557).
Almost surely, 24999985 is an apocalyptic number.
It is an amenable number.
4999985 is a deficient number, since it is larger than the sum of its proper divisors (1012471).
4999985 is a wasteful number, since it uses less digits than its factorization.
4999985 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2083.
The product of its digits is 1049760, while the sum is 53.
The square root of 4999985 is about 2236.0646233953.
The cubic root of 4999985 is about 170.9974236699.
Subtracting 4999985 from its reverse (5899994), we obtain a palindrome (900009).
The spelling of 4999985 in words is "four million, nine hundred ninety-nine thousand, nine hundred eighty-five".