1385471 has 2 divisors, whose sum is σ = 1385472. Its totient is φ = 1385470.

The previous prime is 1385459. The next prime is 1385477. The reversal of 1385471 is 1745831.

1385471 is nontrivially palindromic in base 9.

It is a strong prime.

It is an emirp because it is prime and its reverse (1745831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1385471 - 2¹⁸ = 1123327 is a prime.

It is a super-3 number, since 3×1385471³ = 7978358996336526333, which contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692735 + 692736.

It is an arithmetic number, because the mean of its divisors is an integer number (692736).

2^1385471 is an apocalyptic number.

1385471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385471 is an equidigital number, since it uses as much as digits as its factorization.

1385471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 1385471 is about 1177.0603213090. The cubic root of 1385471 is about 111.4805612717.

Adding to 1385471 its product of digits (3360), we get a palindrome (1388831).

The spelling of 1385471 in words is "one million, three hundred eighty-five thousand, four hundred seventy-one".