4999805 has 4 divisors (see below), whose sum is σ = 5999772. Its totient is φ = 3999840.

The previous prime is 4999801. The next prime is 4999823. The reversal of 4999805 is 5089994.

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 784996 + 4214809 = 886^2 + 2053^2 .

It is not a de Polignac number, because 4999805 - 2² = 4999801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999801) 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, 499976 + ... + 499985.

It is an arithmetic number, because the mean of its divisors is an integer number (1499943).

Almost surely, 2^4999805 is an apocalyptic number.

It is an amenable number.

4999805 is a deficient number, since it is larger than the sum of its proper divisors (999967).

4999805 is an equidigital number, since it uses as much as digits as its factorization.

4999805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999966.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 4999805 is about 2236.0243737491. The cubic root of 4999805 is about 170.9953716700.

The spelling of 4999805 in words is "four million, nine hundred ninety-nine thousand, eight hundred five".