1345447471 has 2 divisors, whose sum is σ = 1345447472. Its totient is φ = 1345447470.

The previous prime is 1345447423. The next prime is 1345447483. The reversal of 1345447471 is 1747445431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345447471 - 2⁷ = 1345447343 is a prime.

It is a super-3 number, since 3×1345447471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345448471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672723735 + 672723736.

It is an arithmetic number, because the mean of its divisors is an integer number (672723736).

Almost surely, 2^1345447471 is an apocalyptic number.

1345447471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345447471 is an equidigital number, since it uses as much as digits as its factorization.

1345447471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 40.

The square root of 1345447471 is about 36680.3417514068. The cubic root of 1345447471 is about 1103.9657052704.

The spelling of 1345447471 in words is "one billion, three hundred forty-five million, four hundred forty-seven thousand, four hundred seventy-one".