75480979 has 8 divisors (see below), whose sum is σ = 86317920. Its totient is φ = 64657536.

The previous prime is 75480893. The next prime is 75480991. The reversal of 75480979 is 97908457.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75480979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75480479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16197 + ... + 20329.

It is an arithmetic number, because the mean of its divisors is an integer number (10789740).

Almost surely, 2^75480979 is an apocalyptic number.

75480979 is a deficient number, since it is larger than the sum of its proper divisors (10836941).

75480979 is a wasteful number, since it uses less digits than its factorization.

75480979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 75480979 is about 8687.9789939893. The cubic root of 75480979 is about 422.6159088169.

The spelling of 75480979 in words is "seventy-five million, four hundred eighty thousand, nine hundred seventy-nine".