1384257 has 16 divisors (see below), whose sum is σ = 2183040. Its totient is φ = 763392.

The previous prime is 1384249. The next prime is 1384303. The reversal of 1384257 is 7524831.

It is not a de Polignac number, because 1384257 - 2³ = 1384249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1384237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528 + ... + 1745.

It is an arithmetic number, because the mean of its divisors is an integer number (136440).

2^1384257 is an apocalyptic number.

It is an amenable number.

1384257 is a deficient number, since it is larger than the sum of its proper divisors (798783).

1384257 is a wasteful number, since it uses less digits than its factorization.

1384257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312.

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

The square root of 1384257 is about 1176.5445167948. The cubic root of 1384257 is about 111.4479906514.

The spelling of 1384257 in words is "one million, three hundred eighty-four thousand, two hundred fifty-seven".