1229964797 has 2 divisors, whose sum is σ = 1229964798. Its totient is φ = 1229964796.

The previous prime is 1229964793. The next prime is 1229964803. The reversal of 1229964797 is 7974699221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 775678201 + 454286596 = 27851^2 + 21314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1229964797 - 2² = 1229964793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229964793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614982398 + 614982399.

It is an arithmetic number, because the mean of its divisors is an integer number (614982399).

Almost surely, 2^1229964797 is an apocalyptic number.

It is an amenable number.

1229964797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229964797 is an equidigital number, since it uses as much as digits as its factorization.

1229964797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 1229964797 is about 35070.8539531047. The cubic root of 1229964797 is about 1071.4310479274.

The spelling of 1229964797 in words is "one billion, two hundred twenty-nine million, nine hundred sixty-four thousand, seven hundred ninety-seven".