1391449327 has 2 divisors, whose sum is σ = 1391449328. Its totient is φ = 1391449326.

The previous prime is 1391449321. The next prime is 1391449387. The reversal of 1391449327 is 7239441931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1391449327 is a prime.

It is a super-2 number, since 2×1391449327² = 3872262459217505858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1391449321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695724663 + 695724664.

It is an arithmetic number, because the mean of its divisors is an integer number (695724664).

Almost surely, 2^1391449327 is an apocalyptic number.

1391449327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1391449327 is an equidigital number, since it uses as much as digits as its factorization.

1391449327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 1391449327 is about 37302.1356895286. The cubic root of 1391449327 is about 1116.4067792416.

The spelling of 1391449327 in words is "one billion, three hundred ninety-one million, four hundred forty-nine thousand, three hundred twenty-seven".