1395727447 has 2 divisors, whose sum is σ = 1395727448. Its totient is φ = 1395727446.

The previous prime is 1395727439. The next prime is 1395727499. The reversal of 1395727447 is 7447275931.

It is a weak prime.

It is an emirp because it is prime and its reverse (7447275931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1395727447 - 2³ = 1395727439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1395727447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395727247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697863723 + 697863724.

It is an arithmetic number, because the mean of its divisors is an integer number (697863724).

Almost surely, 2^1395727447 is an apocalyptic number.

1395727447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395727447 is an equidigital number, since it uses as much as digits as its factorization.

1395727447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 49.

The square root of 1395727447 is about 37359.4358495949. The cubic root of 1395727447 is about 1117.5497686814.

The spelling of 1395727447 in words is "one billion, three hundred ninety-five million, seven hundred twenty-seven thousand, four hundred forty-seven".