1234456679 has 2 divisors, whose sum is σ = 1234456680. Its totient is φ = 1234456678.

The previous prime is 1234456651. The next prime is 1234456687. The reversal of 1234456679 is 9766544321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1234456679 - 2⁸ = 1234456423 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234456609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617228339 + 617228340.

It is an arithmetic number, because the mean of its divisors is an integer number (617228340).

Almost surely, 2^1234456679 is an apocalyptic number.

1234456679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234456679 is an equidigital number, since it uses as much as digits as its factorization.

1234456679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The square root of 1234456679 is about 35134.8356905223. The cubic root of 1234456679 is about 1072.7337667616.

The spelling of 1234456679 in words is "one billion, two hundred thirty-four million, four hundred fifty-six thousand, six hundred seventy-nine".