1293391 has 8 divisors (see below), whose sum is σ = 1419264. Its totient is φ = 1168920.

The previous prime is 1293373. The next prime is 1293401. The reversal of 1293391 is 1933921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1293391 - 2¹¹ = 1291343 is a prime.

1293391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293361) 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 7 ways as a sum of consecutive naturals, for example, 3186 + ... + 3568.

It is an arithmetic number, because the mean of its divisors is an integer number (177408).

2^1293391 is an apocalyptic number.

1293391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1293391 is a deficient number, since it is larger than the sum of its proper divisors (125873).

1293391 is a wasteful number, since it uses less digits than its factorization.

1293391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its digits is 1458, while the sum is 28.

The square root of 1293391 is about 1137.2734939319. The cubic root of 1293391 is about 108.9540248832.

It can be divided in two parts, 1 and 293391, that added together give a palindrome (293392).

The spelling of 1293391 in words is "one million, two hundred ninety-three thousand, three hundred ninety-one".