1385249 has 4 divisors (see below), whose sum is σ = 1408020. Its totient is φ = 1362480.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385249 is 9425831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21025 + 1364224 = 145^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385249 - 2⁸ = 1384993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1385299) 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, 11294 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (352005).

2^1385249 is an apocalyptic number.

It is an amenable number.

1385249 is a deficient number, since it is larger than the sum of its proper divisors (22771).

1385249 is an equidigital number, since it uses as much as digits as its factorization.

1385249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22770.

The product of its digits is 8640, while the sum is 32.

The square root of 1385249 is about 1176.9660148025. The cubic root of 1385249 is about 111.4746066165.

It can be divided in two parts, 1385 and 249, that multiplied together give a triangular number (344865 = T₈₃₀).

The spelling of 1385249 in words is "one million, three hundred eighty-five thousand, two hundred forty-nine".