1283997 has 32 divisors (see below), whose sum is σ = 2088576. Its totient is φ = 691200.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1283997 is 7993821.

It is not a de Polignac number, because 1283997 - 2⁴ = 1283981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17553 + ... + 17625.

It is an arithmetic number, because the mean of its divisors is an integer number (65268).

2^1283997 is an apocalyptic number.

It is an amenable number.

1283997 is a deficient number, since it is larger than the sum of its proper divisors (804579).

1283997 is a wasteful number, since it uses less digits than its factorization.

1283997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141.

The product of its digits is 27216, while the sum is 39.

The square root of 1283997 is about 1133.1359141780. The cubic root of 1283997 is about 108.6896031393.

1283997 divided by its sum of digits (39) gives a palindrome (32923).

The spelling of 1283997 in words is "one million, two hundred eighty-three thousand, nine hundred ninety-seven".