1391283 has 12 divisors (see below), whose sum is σ = 2070280. Its totient is φ = 923436.

The previous prime is 1391281. The next prime is 1391287. The reversal of 1391283 is 3821931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1391283 - 2¹ = 1391281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391281) 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, 6016 + ... + 6242.

2^1391283 is an apocalyptic number.

1391283 is a deficient number, since it is larger than the sum of its proper divisors (678997).

1391283 is an frugal number, since it uses more digits than its factorization.

1391283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 230 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1391283 is about 1179.5265999544. The cubic root of 1391283 is about 111.6362294213.

Multiplying 1391283 by its sum of digits (27), we get a square (37564641 = 6129²).

1391283 divided by its sum of digits (27) gives a square (51529 = 227²).

The spelling of 1391283 in words is "one million, three hundred ninety-one thousand, two hundred eighty-three".