2840917 has 2 divisors, whose sum is σ = 2840918. Its totient is φ = 2840916.

The previous prime is 2840911. The next prime is 2840939. The reversal of 2840917 is 7190482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1661521 + 1179396 = 1289^2 + 1086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840917 - 2¹⁵ = 2808149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2840911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420458 + 1420459.

It is an arithmetic number, because the mean of its divisors is an integer number (1420459).

2^2840917 is an apocalyptic number.

It is an amenable number.

2840917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840917 is an equidigital number, since it uses as much as digits as its factorization.

2840917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 2840917 is about 1685.5020023720. The cubic root of 2840917 is about 141.6292151673.

The spelling of 2840917 in words is "two million, eight hundred forty thousand, nine hundred seventeen".