2538909 has 6 divisors (see below), whose sum is σ = 3667326. Its totient is φ = 1692600.

The previous prime is 2538883. The next prime is 2538917. The reversal of 2538909 is 9098352.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 675684 = 1365^2 + 822^2 .

It is not a de Polignac number, because 2538909 - 2⁹ = 2538397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141042 + ... + 141059.

It is an arithmetic number, because the mean of its divisors is an integer number (611221).

2^2538909 is an apocalyptic number.

It is an amenable number.

2538909 is a deficient number, since it is larger than the sum of its proper divisors (1128417).

2538909 is a wasteful number, since it uses less digits than its factorization.

2538909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282107 (or 282104 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2538909 is about 1593.3954311470. The cubic root of 2538909 is about 136.4213611365.

The spelling of 2538909 in words is "two million, five hundred thirty-eight thousand, nine hundred nine".