1393913 has 2 divisors, whose sum is σ = 1393914. Its totient is φ = 1393912.

The previous prime is 1393891. The next prime is 1393919. The reversal of 1393913 is 3193931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1283689 + 110224 = 1133^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393913 - 2⁸ = 1393657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1393919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696956 + 696957.

It is an arithmetic number, because the mean of its divisors is an integer number (696957).

2^1393913 is an apocalyptic number.

It is an amenable number.

1393913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393913 is an equidigital number, since it uses as much as digits as its factorization.

1393913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2187, while the sum is 29.

The square root of 1393913 is about 1180.6409276321. The cubic root of 1393913 is about 111.7065286760.

The spelling of 1393913 in words is "one million, three hundred ninety-three thousand, nine hundred thirteen".