1393867 has 4 divisors (see below), whose sum is σ = 1397776. Its totient is φ = 1389960.

The previous prime is 1393837. The next prime is 1393871. The reversal of 1393867 is 7683931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1393867 - 2⁷ = 1393739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393807) 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, 1359 + ... + 2152.

It is an arithmetic number, because the mean of its divisors is an integer number (349444).

2^1393867 is an apocalyptic number.

1393867 is a deficient number, since it is larger than the sum of its proper divisors (3909).

1393867 is an equidigital number, since it uses as much as digits as its factorization.

1393867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908.

The product of its digits is 27216, while the sum is 37.

The square root of 1393867 is about 1180.6214465272. The cubic root of 1393867 is about 111.7052998674.

Subtracting 1393867 from its reverse (7683931), we obtain a square (6290064 = 2508²).

The spelling of 1393867 in words is "one million, three hundred ninety-three thousand, eight hundred sixty-seven".