1384825 has 12 divisors (see below), whose sum is σ = 1849708. Its totient is φ = 1022400.

The previous prime is 1384813. The next prime is 1384829. The reversal of 1384825 is 5284831.

It can be written as a sum of positive squares in 6 ways, for example, as 1849 + 1382976 = 43^2 + 1176^2 .

It is not a de Polignac number, because 1384825 - 2⁷ = 1384697 is a prime.

It is a Duffinian number.

1384825 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1806 + ... + 2455.

2^1384825 is an apocalyptic number.

It is an amenable number.

1384825 is a deficient number, since it is larger than the sum of its proper divisors (464883).

1384825 is a wasteful number, since it uses less digits than its factorization.

1384825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284 (or 4279 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 1384825 is about 1176.7858768697. The cubic root of 1384825 is about 111.4632319932.

It can be divided in two parts, 1384 and 825, that added together give a square (2209 = 47²).

The spelling of 1384825 in words is "one million, three hundred eighty-four thousand, eight hundred twenty-five".