75993139 has 2 divisors, whose sum is σ = 75993140. Its totient is φ = 75993138.

The previous prime is 75993119. The next prime is 75993193. The reversal of 75993139 is 93139957.

Together with next prime (75993193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75993139 - 2¹⁷ = 75862067 is a prime.

It is not a weakly prime, because it can be changed into another prime (75993119) 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, 37996569 + 37996570.

It is an arithmetic number, because the mean of its divisors is an integer number (37996570).

Almost surely, 2^75993139 is an apocalyptic number.

75993139 is a deficient number, since it is larger than the sum of its proper divisors (1).

75993139 is an equidigital number, since it uses as much as digits as its factorization.

75993139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 46.

The square root of 75993139 is about 8717.4043728624. The cubic root of 75993139 is about 423.5696115570.

The spelling of 75993139 in words is "seventy-five million, nine hundred ninety-three thousand, one hundred thirty-nine".