2979007805 has 4 divisors (see below), whose sum is σ = 3574809372. Its totient is φ = 2383206240.

The previous prime is 2979007783. The next prime is 2979007831. The reversal of 2979007805 is 5087009792.

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 2060978404 + 918029401 = 45398^2 + 30299^2 .

It is not a de Polignac number, because 2979007805 - 2⁶ = 2979007741 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 2979007805.

It is a congruent 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, 297900776 + ... + 297900785.

It is an arithmetic number, because the mean of its divisors is an integer number (893702343).

Almost surely, 2^2979007805 is an apocalyptic number.

It is an amenable number.

2979007805 is a deficient number, since it is larger than the sum of its proper divisors (595801567).

2979007805 is an equidigital number, since it uses as much as digits as its factorization.

2979007805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595801566.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 2979007805 is about 54580.2876962004. The cubic root of 2979007805 is about 1438.8776950035.

The spelling of 2979007805 in words is "two billion, nine hundred seventy-nine million, seven thousand, eight hundred five".