75909923 has 2 divisors, whose sum is σ = 75909924. Its totient is φ = 75909922.

The previous prime is 75909887. The next prime is 75909949. The reversal of 75909923 is 32990957.

It is a strong prime.

It is an emirp because it is prime and its reverse (32990957) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75909923 - 2⁸ = 75909667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75909523) 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, 37954961 + 37954962.

It is an arithmetic number, because the mean of its divisors is an integer number (37954962).

Almost surely, 2^75909923 is an apocalyptic number.

75909923 is a deficient number, since it is larger than the sum of its proper divisors (1).

75909923 is an equidigital number, since it uses as much as digits as its factorization.

75909923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 75909923 is about 8712.6300851121. The cubic root of 75909923 is about 423.4149456531.

The spelling of 75909923 in words is "seventy-five million, nine hundred nine thousand, nine hundred twenty-three".