75293993 has 2 divisors, whose sum is σ = 75293994. Its totient is φ = 75293992.

The previous prime is 75293987. The next prime is 75294013. The reversal of 75293993 is 39939257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68095504 + 7198489 = 8252^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 75293993 - 2⁸ = 75293737 is a prime.

It is not a weakly prime, because it can be changed into another prime (75293923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37646996 + 37646997.

It is an arithmetic number, because the mean of its divisors is an integer number (37646997).

Almost surely, 2^75293993 is an apocalyptic number.

It is an amenable number.

75293993 is a deficient number, since it is larger than the sum of its proper divisors (1).

75293993 is an equidigital number, since it uses as much as digits as its factorization.

75293993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 47.

The square root of 75293993 is about 8677.2111303114. The cubic root of 75293993 is about 422.2666437745.

The spelling of 75293993 in words is "seventy-five million, two hundred ninety-three thousand, nine hundred ninety-three".