75494879 has 2 divisors, whose sum is σ = 75494880. Its totient is φ = 75494878.

The previous prime is 75494857. The next prime is 75494893. The reversal of 75494879 is 97849457.

It is a strong prime.

It is an emirp because it is prime and its reverse (97849457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75494879 - 2⁸ = 75494623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75494879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75494819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37747439 + 37747440.

It is an arithmetic number, because the mean of its divisors is an integer number (37747440).

Almost surely, 2^75494879 is an apocalyptic number.

75494879 is a deficient number, since it is larger than the sum of its proper divisors (1).

75494879 is an equidigital number, since it uses as much as digits as its factorization.

75494879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 53.

The square root of 75494879 is about 8688.7789130579. The cubic root of 75494879 is about 422.6418491296.

The spelling of 75494879 in words is "seventy-five million, four hundred ninety-four thousand, eight hundred seventy-nine".