20085079 has 4 divisors (see below), whose sum is σ = 22954384. Its totient is φ = 17215776.

The previous prime is 20085067. The next prime is 20085089. The reversal of 20085079 is 97058002.

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

It is a cyclic number.

It is not a de Polignac number, because 20085079 - 2⁷ = 20084951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20085079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085019) 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, 1434642 + ... + 1434655.

It is an arithmetic number, because the mean of its divisors is an integer number (5738596).

Almost surely, 2^20085079 is an apocalyptic number.

20085079 is a deficient number, since it is larger than the sum of its proper divisors (2869305).

20085079 is an equidigital number, since it uses as much as digits as its factorization.

20085079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869304.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 20085079 is about 4481.6379818098. The cubic root of 20085079 is about 271.8261170581.

The spelling of 20085079 in words is "twenty million, eighty-five thousand, seventy-nine".