1207979 has 2 divisors, whose sum is σ = 1207980. Its totient is φ = 1207978.

The previous prime is 1207961. The next prime is 1207981. The reversal of 1207979 is 9797021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1207979 - 2²⁰ = 159403 is a prime.

Together with 1207981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1207909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603989 + 603990.

It is an arithmetic number, because the mean of its divisors is an integer number (603990).

2^1207979 is an apocalyptic number.

1207979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1207979 is an equidigital number, since it uses as much as digits as its factorization.

1207979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 1207979 is about 1099.0809797281. The cubic root of 1207979 is about 106.5008632844.

The spelling of 1207979 in words is "one million, two hundred seven thousand, nine hundred seventy-nine".