1383457 has 4 divisors (see below), whose sum is σ = 1387540. Its totient is φ = 1379376.

The previous prime is 1383451. The next prime is 1383479. The reversal of 1383457 is 7543831.

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 553536 + 829921 = 744^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383457 - 2³ = 1383449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383451) 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, 1482 + ... + 2227.

It is an arithmetic number, because the mean of its divisors is an integer number (346885).

2^1383457 is an apocalyptic number.

It is an amenable number.

1383457 is a deficient number, since it is larger than the sum of its proper divisors (4083).

1383457 is an equidigital number, since it uses as much as digits as its factorization.

1383457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082.

The product of its digits is 10080, while the sum is 31.

The square root of 1383457 is about 1176.2044890239. The cubic root of 1383457 is about 111.4265168996.

The spelling of 1383457 in words is "one million, three hundred eighty-three thousand, four hundred fifty-seven".