84252579 has 4 divisors (see below), whose sum is σ = 112336776. Its totient is φ = 56168384.

The previous prime is 84252547. The next prime is 84252587. The reversal of 84252579 is 97525248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84252579 - 2⁵ = 84252547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84252579.

It is not an unprimeable number, because it can be changed into a prime (84252599) 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 3 ways as a sum of consecutive naturals, for example, 14042094 + ... + 14042099.

It is an arithmetic number, because the mean of its divisors is an integer number (28084194).

Almost surely, 2^84252579 is an apocalyptic number.

84252579 is a deficient number, since it is larger than the sum of its proper divisors (28084197).

84252579 is a wasteful number, since it uses less digits than its factorization.

84252579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28084196.

The product of its digits is 201600, while the sum is 42.

The square root of 84252579 is about 9178.9203613497. The cubic root of 84252579 is about 438.3904329162.

The spelling of 84252579 in words is "eighty-four million, two hundred fifty-two thousand, five hundred seventy-nine".