1385047 has 4 divisors (see below), whose sum is σ = 1387440. Its totient is φ = 1382656.

The previous prime is 1385039. The next prime is 1385051. The reversal of 1385047 is 7405831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1385047 - 2³ = 1385039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (346860).

2^1385047 is an apocalyptic number.

1385047 is a deficient number, since it is larger than the sum of its proper divisors (2393).

1385047 is an equidigital number, since it uses as much as digits as its factorization.

1385047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1385047 is about 1176.8801978111. The cubic root of 1385047 is about 111.4691878638.

It can be divided in two parts, 138504 and 7, that multiplied together give a triangular number (969528 = T₁₃₉₂).

The spelling of 1385047 in words is "one million, three hundred eighty-five thousand, forty-seven".