2423909 has 2 divisors, whose sum is σ = 2423910. Its totient is φ = 2423908.

The previous prime is 2423891. The next prime is 2423917. The reversal of 2423909 is 9093242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2411809 + 12100 = 1553^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2423909 - 2¹⁶ = 2358373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2423929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211954 + 1211955.

It is an arithmetic number, because the mean of its divisors is an integer number (1211955).

2^2423909 is an apocalyptic number.

It is an amenable number.

2423909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2423909 is an equidigital number, since it uses as much as digits as its factorization.

2423909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2423909 is about 1556.8908118426. The cubic root of 2423909 is about 134.3297182202.

The spelling of 2423909 in words is "two million, four hundred twenty-three thousand, nine hundred nine".