79275487 has 2 divisors, whose sum is σ = 79275488. Its totient is φ = 79275486.

The previous prime is 79275479. The next prime is 79275491. The reversal of 79275487 is 78457297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79275487 - 2³ = 79275479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79275487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79275407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39637743 + 39637744.

It is an arithmetic number, because the mean of its divisors is an integer number (39637744).

Almost surely, 2^79275487 is an apocalyptic number.

79275487 is a deficient number, since it is larger than the sum of its proper divisors (1).

79275487 is an equidigital number, since it uses as much as digits as its factorization.

79275487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 49.

The square root of 79275487 is about 8903.6782848439. The cubic root of 79275487 is about 429.5822280960.

The spelling of 79275487 in words is "seventy-nine million, two hundred seventy-five thousand, four hundred eighty-seven".