75479539 has 2 divisors, whose sum is σ = 75479540. Its totient is φ = 75479538.

The previous prime is 75479531. The next prime is 75479561. The reversal of 75479539 is 93597457.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75479539 - 2³ = 75479531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75479492 and 75479501.

It is not a weakly prime, because it can be changed into another prime (75479531) 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 as a sum of consecutive naturals, namely, 37739769 + 37739770.

It is an arithmetic number, because the mean of its divisors is an integer number (37739770).

Almost surely, 2^75479539 is an apocalyptic number.

75479539 is a deficient number, since it is larger than the sum of its proper divisors (1).

75479539 is an equidigital number, since it uses as much as digits as its factorization.

75479539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 49.

The square root of 75479539 is about 8687.8961204655. The cubic root of 75479539 is about 422.6132212932.

The spelling of 75479539 in words is "seventy-five million, four hundred seventy-nine thousand, five hundred thirty-nine".