1385254447 has 2 divisors, whose sum is σ = 1385254448. Its totient is φ = 1385254446.

The previous prime is 1385254363. The next prime is 1385254459. The reversal of 1385254447 is 7444525831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1385254447 - 2⁷ = 1385254319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385254477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692627223 + 692627224.

It is an arithmetic number, because the mean of its divisors is an integer number (692627224).

Almost surely, 2^1385254447 is an apocalyptic number.

1385254447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385254447 is an equidigital number, since it uses as much as digits as its factorization.

1385254447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 43.

The square root of 1385254447 is about 37219.0065289228. The cubic root of 1385254447 is about 1114.7475272772.

The spelling of 1385254447 in words is "one billion, three hundred eighty-five million, two hundred fifty-four thousand, four hundred forty-seven".