740925509 has 2 divisors, whose sum is σ = 740925510. Its totient is φ = 740925508.

The previous prime is 740925499. The next prime is 740925527. The reversal of 740925509 is 905529047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440076484 + 300849025 = 20978^2 + 17345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740925509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740925529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370462754 + 370462755.

It is an arithmetic number, because the mean of its divisors is an integer number (370462755).

Almost surely, 2^740925509 is an apocalyptic number.

It is an amenable number.

740925509 is a deficient number, since it is larger than the sum of its proper divisors (1).

740925509 is an equidigital number, since it uses as much as digits as its factorization.

740925509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 740925509 is about 27219.9468956132. The cubic root of 740925509 is about 904.8810966767.

The spelling of 740925509 in words is "seven hundred forty million, nine hundred twenty-five thousand, five hundred nine".