1408649717 has 2 divisors, whose sum is σ = 1408649718. Its totient is φ = 1408649716.

The previous prime is 1408649707. The next prime is 1408649719. The reversal of 1408649717 is 7179468041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1392857041 + 15792676 = 37321^2 + 3974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1408649717 - 2⁶ = 1408649653 is a prime.

Together with 1408649719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1408649719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704324858 + 704324859.

It is an arithmetic number, because the mean of its divisors is an integer number (704324859).

Almost surely, 2^1408649717 is an apocalyptic number.

It is an amenable number.

1408649717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408649717 is an equidigital number, since it uses as much as digits as its factorization.

1408649717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 1408649717 is about 37531.9825881874. The cubic root of 1408649717 is about 1120.9881046706.

The spelling of 1408649717 in words is "one billion, four hundred eight million, six hundred forty-nine thousand, seven hundred seventeen".