1097279 has 4 divisors (see below), whose sum is σ = 1101600. Its totient is φ = 1092960.

The previous prime is 1097267. The next prime is 1097293. The reversal of 1097279 is 9727901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9727901 = 2339 ⋅4159.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097279 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097209) 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 3 ways as a sum of consecutive naturals, for example, 1754 + ... + 2295.

It is an arithmetic number, because the mean of its divisors is an integer number (275400).

2^1097279 is an apocalyptic number.

1097279 is a deficient number, since it is larger than the sum of its proper divisors (4321).

1097279 is an equidigital number, since it uses as much as digits as its factorization.

1097279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 1097279 is about 1047.5108591323. The cubic root of 1097279 is about 103.1428250792.

The spelling of 1097279 in words is "one million, ninety-seven thousand, two hundred seventy-nine".