1385569 has 2 divisors, whose sum is σ = 1385570. Its totient is φ = 1385568.

The previous prime is 1385563. The next prime is 1385603. The reversal of 1385569 is 9655831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1288225 + 97344 = 1135^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385569 - 2³ = 1385561 is a prime.

It is a super-2 number, since 2×1385569² = 3839602907522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1385561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692784 + 692785.

It is an arithmetic number, because the mean of its divisors is an integer number (692785).

2^1385569 is an apocalyptic number.

It is an amenable number.

1385569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385569 is an equidigital number, since it uses as much as digits as its factorization.

1385569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 1385569 is about 1177.1019497053. The cubic root of 1385569 is about 111.4831897010.

It can be divided in two parts, 13855 and 69, that added together give a square (13924 = 118²).

The spelling of 1385569 in words is "one million, three hundred eighty-five thousand, five hundred sixty-nine".