1393734677 has 2 divisors, whose sum is σ = 1393734678. Its totient is φ = 1393734676.

The previous prime is 1393734659. The next prime is 1393734697. The reversal of 1393734677 is 7764373931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881436721 + 512297956 = 29689^2 + 22634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393734677 - 2²⁰ = 1392686101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393734637) 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 as a sum of consecutive naturals, namely, 696867338 + 696867339.

It is an arithmetic number, because the mean of its divisors is an integer number (696867339).

Almost surely, 2^1393734677 is an apocalyptic number.

It is an amenable number.

1393734677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393734677 is an equidigital number, since it uses as much as digits as its factorization.

1393734677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000376, while the sum is 50.

The square root of 1393734677 is about 37332.7560863111. The cubic root of 1393734677 is about 1117.0176494186.

The spelling of 1393734677 in words is "one billion, three hundred ninety-three million, seven hundred thirty-four thousand, six hundred seventy-seven".