75413809 has 2 divisors, whose sum is σ = 75413810. Its totient is φ = 75413808.

The previous prime is 75413797. The next prime is 75413837. The reversal of 75413809 is 90831457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61575409 + 13838400 = 7847^2 + 3720^2 .

It is a cyclic number.

It is not a de Polignac number, because 75413809 - 2²¹ = 73316657 is a prime.

It is not a weakly prime, because it can be changed into another prime (75413879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37706904 + 37706905.

It is an arithmetic number, because the mean of its divisors is an integer number (37706905).

Almost surely, 2^75413809 is an apocalyptic number.

It is an amenable number.

75413809 is a deficient number, since it is larger than the sum of its proper divisors (1).

75413809 is an equidigital number, since it uses as much as digits as its factorization.

75413809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 75413809 is about 8684.1124474525. The cubic root of 75413809 is about 422.4905106233.

The spelling of 75413809 in words is "seventy-five million, four hundred thirteen thousand, eight hundred nine".