2420909 has 4 divisors (see below), whose sum is σ = 2425440. Its totient is φ = 2416380.

The previous prime is 2420897. The next prime is 2420917. The reversal of 2420909 is 9090242.

2420909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2420909 is a prime.

It is a Duffinian number.

2420909 is a modest number, since divided by 909 gives 242 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (606360).

2^2420909 is an apocalyptic number.

It is an amenable number.

2420909 is a deficient number, since it is larger than the sum of its proper divisors (4531).

2420909 is an equidigital number, since it uses as much as digits as its factorization.

2420909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2420909 is about 1555.9270548454. The cubic root of 2420909 is about 134.2742767102.

The spelling of 2420909 in words is "two million, four hundred twenty thousand, nine hundred nine".