1396347389 has 2 divisors, whose sum is σ = 1396347390. Its totient is φ = 1396347388.

The previous prime is 1396347383. The next prime is 1396347427. The reversal of 1396347389 is 9837436931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860424889 + 535922500 = 29333^2 + 23150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396347389 - 2⁸ = 1396347133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1396347389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396347383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698173694 + 698173695.

It is an arithmetic number, because the mean of its divisors is an integer number (698173695).

Almost surely, 2^1396347389 is an apocalyptic number.

It is an amenable number.

1396347389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396347389 is an equidigital number, since it uses as much as digits as its factorization.

1396347389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 53.

The square root of 1396347389 is about 37367.7319220742. The cubic root of 1396347389 is about 1117.7152053477.

The spelling of 1396347389 in words is "one billion, three hundred ninety-six million, three hundred forty-seven thousand, three hundred eighty-nine".