2784979 has 2 divisors, whose sum is σ = 2784980. Its totient is φ = 2784978.

The previous prime is 2784973. The next prime is 2784997. The reversal of 2784979 is 9794872.

Together with next prime (2784997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2784979 - 2¹⁷ = 2653907 is a prime.

It is a super-2 number, since 2×2784979² = 15512216060882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2784973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392489 + 1392490.

It is an arithmetic number, because the mean of its divisors is an integer number (1392490).

2^2784979 is an apocalyptic number.

2784979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2784979 is an equidigital number, since it uses as much as digits as its factorization.

2784979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 2784979 is about 1668.8256349901. The cubic root of 2784979 is about 140.6934809834.

The spelling of 2784979 in words is "two million, seven hundred eighty-four thousand, nine hundred seventy-nine".