75386979 has 12 divisors (see below), whose sum is σ = 112647600. Its totient is φ = 48524784.

The previous prime is 75386953. The next prime is 75387001. The reversal of 75386979 is 97968357.

It is not a de Polignac number, because 75386979 - 2¹¹ = 75384931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75386929) 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 11 ways as a sum of consecutive naturals, for example, 144159 + ... + 144680.

It is an arithmetic number, because the mean of its divisors is an integer number (9387300).

Almost surely, 2^75386979 is an apocalyptic number.

75386979 is a deficient number, since it is larger than the sum of its proper divisors (37260621).

75386979 is a wasteful number, since it uses less digits than its factorization.

75386979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288874 (or 288871 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 75386979 is about 8682.5675350094. The cubic root of 75386979 is about 422.4404014763.

The spelling of 75386979 in words is "seventy-five million, three hundred eighty-six thousand, nine hundred seventy-nine".