1230955447 has 2 divisors, whose sum is σ = 1230955448. Its totient is φ = 1230955446.

The previous prime is 1230955403. The next prime is 1230955477. The reversal of 1230955447 is 7445590321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230955447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230955477) 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, 615477723 + 615477724.

It is an arithmetic number, because the mean of its divisors is an integer number (615477724).

Almost surely, 2^1230955447 is an apocalyptic number.

1230955447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230955447 is an equidigital number, since it uses as much as digits as its factorization.

1230955447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1230955447 is about 35084.9746615271. The cubic root of 1230955447 is about 1071.7186248112.

The spelling of 1230955447 in words is "one billion, two hundred thirty million, nine hundred fifty-five thousand, four hundred forty-seven".