1097879 has 2 divisors, whose sum is σ = 1097880. Its totient is φ = 1097878.

The previous prime is 1097869. The next prime is 1097891. The reversal of 1097879 is 9787901.

It is a weak prime.

It is an emirp because it is prime and its reverse (9787901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097879 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548939 + 548940.

It is an arithmetic number, because the mean of its divisors is an integer number (548940).

2^1097879 is an apocalyptic number.

1097879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097879 is an equidigital number, since it uses as much as digits as its factorization.

1097879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 1097879 is about 1047.7972132049. The cubic root of 1097879 is about 103.1616213982.

The spelling of 1097879 in words is "one million, ninety-seven thousand, eight hundred seventy-nine".