1308226979 has 2 divisors, whose sum is σ = 1308226980. Its totient is φ = 1308226978.

The previous prime is 1308226973. The next prime is 1308226981. The reversal of 1308226979 is 9796228031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1308226979 - 2²⁰ = 1307178403 is a prime.

It is a super-2 number, since 2×1308226979² = 3422915657166932882, which contains 22 as substring.

Together with 1308226981, 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 (1308226973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 654113489 + 654113490.

It is an arithmetic number, because the mean of its divisors is an integer number (654113490).

Almost surely, 2^1308226979 is an apocalyptic number.

1308226979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1308226979 is an equidigital number, since it uses as much as digits as its factorization.

1308226979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 1308226979 is about 36169.4204957724. The cubic root of 1308226979 is about 1093.6903168783.

The spelling of 1308226979 in words is "one billion, three hundred eight million, two hundred twenty-six thousand, nine hundred seventy-nine".