1393680727 has 2 divisors, whose sum is σ = 1393680728. Its totient is φ = 1393680726.

The previous prime is 1393680703. The next prime is 1393680749. The reversal of 1393680727 is 7270863931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1393680727 is a prime.

It is a super-2 number, since 2×1393680727² = 3884691937622497058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393680787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696840363 + 696840364.

It is an arithmetic number, because the mean of its divisors is an integer number (696840364).

Almost surely, 2^1393680727 is an apocalyptic number.

1393680727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393680727 is an equidigital number, since it uses as much as digits as its factorization.

1393680727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 1393680727 is about 37332.0335235036. The cubic root of 1393680727 is about 1117.0032363740.

The spelling of 1393680727 in words is "one billion, three hundred ninety-three million, six hundred eighty thousand, seven hundred twenty-seven".