75923891 has 2 divisors, whose sum is σ = 75923892. Its totient is φ = 75923890.

The previous prime is 75923879. The next prime is 75923899. The reversal of 75923891 is 19832957.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75923891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75923899) 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, 37961945 + 37961946.

It is an arithmetic number, because the mean of its divisors is an integer number (37961946).

Almost surely, 2^75923891 is an apocalyptic number.

75923891 is a deficient number, since it is larger than the sum of its proper divisors (1).

75923891 is an equidigital number, since it uses as much as digits as its factorization.

75923891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 75923891 is about 8713.4316431587. The cubic root of 75923891 is about 423.4409145778.

The spelling of 75923891 in words is "seventy-five million, nine hundred twenty-three thousand, eight hundred ninety-one".