2788979 has 2 divisors, whose sum is σ = 2788980. Its totient is φ = 2788978.

The previous prime is 2788939. The next prime is 2788987. The reversal of 2788979 is 9798872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2788979 - 2¹² = 2784883 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2788939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394489 + 1394490.

It is an arithmetic number, because the mean of its divisors is an integer number (1394490).

2^2788979 is an apocalyptic number.

2788979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788979 is an equidigital number, since it uses as much as digits as its factorization.

2788979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 50.

The square root of 2788979 is about 1670.0236525271. The cubic root of 2788979 is about 140.7608070095.

The spelling of 2788979 in words is "two million, seven hundred eighty-eight thousand, nine hundred seventy-nine".