768243979 has 2 divisors, whose sum is σ = 768243980. Its totient is φ = 768243978.

The previous prime is 768243911. The next prime is 768244007. The reversal of 768243979 is 979342867.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 768243979 - 2⁹ = 768243467 is a prime.

It is a super-2 number, since 2×768243979² = 1180397622539504882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (768247979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384121989 + 384121990.

It is an arithmetic number, because the mean of its divisors is an integer number (384121990).

Almost surely, 2^768243979 is an apocalyptic number.

768243979 is a deficient number, since it is larger than the sum of its proper divisors (1).

768243979 is an equidigital number, since it uses as much as digits as its factorization.

768243979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The square root of 768243979 is about 27717.2144884727. The cubic root of 768243979 is about 915.8683581631.

The spelling of 768243979 in words is "seven hundred sixty-eight million, two hundred forty-three thousand, nine hundred seventy-nine".