2909393 has 2 divisors, whose sum is σ = 2909394. Its totient is φ = 2909392.

The previous prime is 2909383. The next prime is 2909407. The reversal of 2909393 is 3939092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2879809 + 29584 = 1697^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 2909393 - 2⁴ = 2909377 is a prime.

It is not a weakly prime, because it can be changed into another prime (2909323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454696 + 1454697.

It is an arithmetic number, because the mean of its divisors is an integer number (1454697).

2^2909393 is an apocalyptic number.

It is an amenable number.

2909393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2909393 is an equidigital number, since it uses as much as digits as its factorization.

2909393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 2909393 is about 1705.6942867935. The cubic root of 2909393 is about 142.7581122712.

The spelling of 2909393 in words is "two million, nine hundred nine thousand, three hundred ninety-three".