2856923 has 2 divisors, whose sum is σ = 2856924. Its totient is φ = 2856922.

The previous prime is 2856883. The next prime is 2856961. The reversal of 2856923 is 3296582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2856923 - 2¹⁰ = 2855899 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 8⁷ + 5⁸ + 6⁷ + 9³ + 2¹⁶ + 3⁸ .

It is not a weakly prime, because it can be changed into another prime (2856823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428461 + 1428462.

It is an arithmetic number, because the mean of its divisors is an integer number (1428462).

2^2856923 is an apocalyptic number.

2856923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2856923 is an equidigital number, since it uses as much as digits as its factorization.

2856923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 2856923 is about 1690.2434735860. The cubic root of 2856923 is about 141.8947014112.

The spelling of 2856923 in words is "two million, eight hundred fifty-six thousand, nine hundred twenty-three".