2980405 has 4 divisors (see below), whose sum is σ = 3576492. Its totient is φ = 2384320.

The previous prime is 2980403. The next prime is 2980421. The reversal of 2980405 is 5040892.

It is a happy number.

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 439569 + 2540836 = 663^2 + 1594^2 .

It is not a de Polignac number, because 2980405 - 2¹ = 2980403 is a prime.

It is a Duffinian number.

2980405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2980403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298036 + ... + 298045.

It is an arithmetic number, because the mean of its divisors is an integer number (894123).

2^2980405 is an apocalyptic number.

It is an amenable number.

2980405 is a deficient number, since it is larger than the sum of its proper divisors (596087).

2980405 is an equidigital number, since it uses as much as digits as its factorization.

2980405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596086.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2980405 is about 1726.3849512782. The cubic root of 2980405 is about 143.9102610885.

The spelling of 2980405 in words is "two million, nine hundred eighty thousand, four hundred five".