1385291 has 2 divisors, whose sum is σ = 1385292. Its totient is φ = 1385290.

The previous prime is 1385287. The next prime is 1385299. The reversal of 1385291 is 1925831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1385291 - 2² = 1385287 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1385299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692645 + 692646.

It is an arithmetic number, because the mean of its divisors is an integer number (692646).

2^1385291 is an apocalyptic number.

1385291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385291 is an equidigital number, since it uses as much as digits as its factorization.

1385291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The square root of 1385291 is about 1176.9838571535. The cubic root of 1385291 is about 111.4757332217.

The spelling of 1385291 in words is "one million, three hundred eighty-five thousand, two hundred ninety-one".