1393723 has 2 divisors, whose sum is σ = 1393724. Its totient is φ = 1393722.

The previous prime is 1393697. The next prime is 1393739. The reversal of 1393723 is 3273931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1393723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1393691 and 1393700.

It is not a weakly prime, because it can be changed into another prime (1393123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696861 + 696862.

It is an arithmetic number, because the mean of its divisors is an integer number (696862).

2^1393723 is an apocalyptic number.

1393723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393723 is an equidigital number, since it uses as much as digits as its factorization.

1393723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 28.

The square root of 1393723 is about 1180.5604601205. The cubic root of 1393723 is about 111.7014529874.

It can be divided in two parts, 1393 and 723, that added together give a square (2116 = 46²).

The spelling of 1393723 in words is "one million, three hundred ninety-three thousand, seven hundred twenty-three".