2928509 has 2 divisors, whose sum is σ = 2928510. Its totient is φ = 2928508.

The previous prime is 2928491. The next prime is 2928517. The reversal of 2928509 is 9058292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 1315609 = 1270^2 + 1147^2 .

It is a cyclic number.

It is not a de Polignac number, because 2928509 - 2¹² = 2924413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2928529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1464254 + 1464255.

It is an arithmetic number, because the mean of its divisors is an integer number (1464255).

2^2928509 is an apocalyptic number.

It is an amenable number.

2928509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2928509 is an equidigital number, since it uses as much as digits as its factorization.

2928509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2928509 is about 1711.2886956911. The cubic root of 2928509 is about 143.0700913177.

The spelling of 2928509 in words is "two million, nine hundred twenty-eight thousand, five hundred nine".