7140779 has 2 divisors, whose sum is σ = 7140780. Its totient is φ = 7140778.

The previous prime is 7140769. The next prime is 7140797. The reversal of 7140779 is 9770417.

Together with next prime (7140797) 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 a de Polignac number, because none of the positive numbers 2^k-7140779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7140769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570389 + 3570390.

It is an arithmetic number, because the mean of its divisors is an integer number (3570390).

Almost surely, 2^7140779 is an apocalyptic number.

7140779 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140779 is an equidigital number, since it uses as much as digits as its factorization.

7140779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 7140779 is about 2672.2236059132. The cubic root of 7140779 is about 192.5669997847.

The spelling of 7140779 in words is "seven million, one hundred forty thousand, seven hundred seventy-nine".