1390327249 has 2 divisors, whose sum is σ = 1390327250. Its totient is φ = 1390327248.

The previous prime is 1390327247. The next prime is 1390327259. The reversal of 1390327249 is 9427230931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1300684225 + 89643024 = 36065^2 + 9468^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390327249 - 2¹ = 1390327247 is a prime.

Together with 1390327247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1390327247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695163624 + 695163625.

It is an arithmetic number, because the mean of its divisors is an integer number (695163625).

Almost surely, 2^1390327249 is an apocalyptic number.

It is an amenable number.

1390327249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390327249 is an equidigital number, since it uses as much as digits as its factorization.

1390327249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1390327249 is about 37287.0922572410. The cubic root of 1390327249 is about 1116.1066048500.

The spelling of 1390327249 in words is "one billion, three hundred ninety million, three hundred twenty-seven thousand, two hundred forty-nine".