75079979 has 8 divisors (see below), whose sum is σ = 82828032. Its totient is φ = 67613760.

The previous prime is 75079969. The next prime is 75079997. The reversal of 75079979 is 97997057.

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 75079979 - 2¹² = 75075883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75079979.

It is not an unprimeable number, because it can be changed into a prime (75079969) 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, 69899 + ... + 70964.

It is an arithmetic number, because the mean of its divisors is an integer number (10353504).

Almost surely, 2^75079979 is an apocalyptic number.

75079979 is a deficient number, since it is larger than the sum of its proper divisors (7748053).

75079979 is a wasteful number, since it uses less digits than its factorization.

75079979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140917.

The product of its (nonzero) digits is 1250235, while the sum is 53.

The square root of 75079979 is about 8664.8703971843. The cubic root of 75079979 is about 421.8661836219.

The spelling of 75079979 in words is "seventy-five million, seventy-nine thousand, nine hundred seventy-nine".