1208949979 has 2 divisors, whose sum is σ = 1208949980. Its totient is φ = 1208949978.

The previous prime is 1208949961. The next prime is 1208949983. The reversal of 1208949979 is 9799498021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1208949979 - 2²³ = 1200561371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1208949779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604474989 + 604474990.

It is an arithmetic number, because the mean of its divisors is an integer number (604474990).

Almost surely, 2^1208949979 is an apocalyptic number.

1208949979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208949979 is an equidigital number, since it uses as much as digits as its factorization.

1208949979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The square root of 1208949979 is about 34769.9579953730. The cubic root of 1208949979 is about 1065.2939093454.

The spelling of 1208949979 in words is "one billion, two hundred eight million, nine hundred forty-nine thousand, nine hundred seventy-nine".