75499393 has 2 divisors, whose sum is σ = 75499394. Its totient is φ = 75499392.

The previous prime is 75499381. The next prime is 75499427. The reversal of 75499393 is 39399457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61905424 + 13593969 = 7868^2 + 3687^2 .

It is a cyclic number.

It is not a de Polignac number, because 75499393 - 2¹³ = 75491201 is a prime.

It is not a weakly prime, because it can be changed into another prime (75499313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37749696 + 37749697.

It is an arithmetic number, because the mean of its divisors is an integer number (37749697).

Almost surely, 2^75499393 is an apocalyptic number.

It is an amenable number.

75499393 is a deficient number, since it is larger than the sum of its proper divisors (1).

75499393 is an equidigital number, since it uses as much as digits as its factorization.

75499393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 49.

The square root of 75499393 is about 8689.0386694962. The cubic root of 75499393 is about 422.6502725145.

The spelling of 75499393 in words is "seventy-five million, four hundred ninety-nine thousand, three hundred ninety-three".