1385247 has 8 divisors (see below), whose sum is σ = 1865344. Its totient is φ = 914328.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385247 is 7425831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1385247 - 2⁶ = 1385183 is a prime.

It is a Duffinian number.

1385247 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (233168).

2^1385247 is an apocalyptic number.

1385247 is a deficient number, since it is larger than the sum of its proper divisors (480097).

1385247 is a wasteful number, since it uses less digits than its factorization.

1385247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589.

The product of its digits is 6720, while the sum is 30.

The square root of 1385247 is about 1176.9651651600. The cubic root of 1385247 is about 111.4745529680.

The spelling of 1385247 in words is "one million, three hundred eighty-five thousand, two hundred forty-seven".