2939917 has 2 divisors, whose sum is σ = 2939918. Its totient is φ = 2939916.

The previous prime is 2939899. The next prime is 2939941. The reversal of 2939917 is 7199392.

2939917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2802276 + 137641 = 1674^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 2939917 - 2¹⁹ = 2415629 is a prime.

It is a super-2 number, since 2×2939917² = 17286223933778, which contains 22 as substring.

2939917 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2939917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2939957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1469958 + 1469959.

It is an arithmetic number, because the mean of its divisors is an integer number (1469959).

2^2939917 is an apocalyptic number.

It is an amenable number.

2939917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2939917 is an equidigital number, since it uses as much as digits as its factorization.

2939917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 40.

The square root of 2939917 is about 1714.6186164859. The cubic root of 2939917 is about 143.2556270106.

The spelling of 2939917 in words is "two million, nine hundred thirty-nine thousand, nine hundred seventeen".