1393279 has 4 divisors (see below), whose sum is σ = 1397520. Its totient is φ = 1389040.

The previous prime is 1393261. The next prime is 1393283. The reversal of 1393279 is 9723931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9723931 = 7 ⋅1389133.

It is a cyclic number.

It is not a de Polignac number, because 1393279 - 2¹⁵ = 1360511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393219) 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, 1582 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (349380).

2^1393279 is an apocalyptic number.

1393279 is a deficient number, since it is larger than the sum of its proper divisors (4241).

1393279 is an equidigital number, since it uses as much as digits as its factorization.

1393279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240.

The product of its digits is 10206, while the sum is 34.

The square root of 1393279 is about 1180.3723988640. The cubic root of 1393279 is about 111.6895901059.

The spelling of 1393279 in words is "one million, three hundred ninety-three thousand, two hundred seventy-nine".