2938861 has 2 divisors, whose sum is σ = 2938862. Its totient is φ = 2938860.

The previous prime is 2938853. The next prime is 2938927. The reversal of 2938861 is 1688392.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 281961 = 1630^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 2938861 - 2³ = 2938853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2938861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2938801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1469430 + 1469431.

It is an arithmetic number, because the mean of its divisors is an integer number (1469431).

2^2938861 is an apocalyptic number.

It is an amenable number.

2938861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2938861 is an equidigital number, since it uses as much as digits as its factorization.

2938861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 2938861 is about 1714.3106486282. The cubic root of 2938861 is about 143.2384727782.

The spelling of 2938861 in words is "two million, nine hundred thirty-eight thousand, eight hundred sixty-one".