1391465347 has 2 divisors, whose sum is σ = 1391465348. Its totient is φ = 1391465346.

The previous prime is 1391465329. The next prime is 1391465357. The reversal of 1391465347 is 7435641931.

It is a strong prime.

It is an emirp because it is prime and its reverse (7435641931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1391465347 - 2¹⁵ = 1391432579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1391465357) 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, 695732673 + 695732674.

It is an arithmetic number, because the mean of its divisors is an integer number (695732674).

Almost surely, 2^1391465347 is an apocalyptic number.

1391465347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391465347 is an equidigital number, since it uses as much as digits as its factorization.

1391465347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 1391465347 is about 37302.3504219238. The cubic root of 1391465347 is about 1116.4110636874.

The spelling of 1391465347 in words is "one billion, three hundred ninety-one million, four hundred sixty-five thousand, three hundred forty-seven".