2789993 has 2 divisors, whose sum is σ = 2789994. Its totient is φ = 2789992.

The previous prime is 2789951. The next prime is 2790001. The reversal of 2789993 is 3999872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2679769 + 110224 = 1637^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 2789993 - 2⁶ = 2789929 is a prime.

It is not a weakly prime, because it can be changed into another prime (2789593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394996 + 1394997.

It is an arithmetic number, because the mean of its divisors is an integer number (1394997).

2^2789993 is an apocalyptic number.

It is an amenable number.

2789993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789993 is an equidigital number, since it uses as much as digits as its factorization.

2789993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 2789993 is about 1670.3272134525. The cubic root of 2789993 is about 140.7778639281. Note that the first 3 decimals are identical.

The spelling of 2789993 in words is "two million, seven hundred eighty-nine thousand, nine hundred ninety-three".