75839947 has 8 divisors (see below), whose sum is σ = 79225344. Its totient is φ = 72461928.

The previous prime is 75839923. The next prime is 75839969. The reversal of 75839947 is 74993857.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75839947 - 2¹¹ = 75837899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75839894 and 75839903.

It is not an unprimeable number, because it can be changed into a prime (75839047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35368 + ... + 37450.

It is an arithmetic number, because the mean of its divisors is an integer number (9903168).

Almost surely, 2^75839947 is an apocalyptic number.

75839947 is a deficient number, since it is larger than the sum of its proper divisors (3385397).

75839947 is a wasteful number, since it uses less digits than its factorization.

75839947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

The product of its digits is 1905120, while the sum is 52.

The square root of 75839947 is about 8708.6133798671. The cubic root of 75839947 is about 423.2848002035.

The spelling of 75839947 in words is "seventy-five million, eight hundred thirty-nine thousand, nine hundred forty-seven".