740409317 has 2 divisors, whose sum is σ = 740409318. Its totient is φ = 740409316.

The previous prime is 740409287. The next prime is 740409337. The reversal of 740409317 is 713904047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 689272516 + 51136801 = 26254^2 + 7151^2 .

It is an emirp because it is prime and its reverse (713904047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 740409317 - 2¹² = 740405221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740409337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370204658 + 370204659.

It is an arithmetic number, because the mean of its divisors is an integer number (370204659).

Almost surely, 2^740409317 is an apocalyptic number.

It is an amenable number.

740409317 is a deficient number, since it is larger than the sum of its proper divisors (1).

740409317 is an equidigital number, since it uses as much as digits as its factorization.

740409317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 740409317 is about 27210.4633734893. The cubic root of 740409317 is about 904.6709087017.

The spelling of 740409317 in words is "seven hundred forty million, four hundred nine thousand, three hundred seventeen".