740073409 has 2 divisors, whose sum is σ = 740073410. Its totient is φ = 740073408.

The previous prime is 740073407. The next prime is 740073419. The reversal of 740073409 is 904370047.

740073409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557904400 + 182169009 = 23620^2 + 13497^2 .

It is a cyclic number.

It is not a de Polignac number, because 740073409 - 2¹ = 740073407 is a prime.

Together with 740073407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (740073407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370036704 + 370036705.

It is an arithmetic number, because the mean of its divisors is an integer number (370036705).

Almost surely, 2^740073409 is an apocalyptic number.

It is an amenable number.

740073409 is a deficient number, since it is larger than the sum of its proper divisors (1).

740073409 is an equidigital number, since it uses as much as digits as its factorization.

740073409 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 34.

The square root of 740073409 is about 27204.2902682647. The cubic root of 740073409 is about 904.5340780074.

The spelling of 740073409 in words is "seven hundred forty million, seventy-three thousand, four hundred nine".