79889529 has 4 divisors (see below), whose sum is σ = 106519376. Its totient is φ = 53259684.

The previous prime is 79889507. The next prime is 79889539. The reversal of 79889529 is 92598897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79889529 - 2¹¹ = 79887481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79889539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13314919 + ... + 13314924.

It is an arithmetic number, because the mean of its divisors is an integer number (26629844).

Almost surely, 2^79889529 is an apocalyptic number.

It is an amenable number.

79889529 is a deficient number, since it is larger than the sum of its proper divisors (26629847).

79889529 is a wasteful number, since it uses less digits than its factorization.

79889529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26629846.

The product of its digits is 3265920, while the sum is 57.

The square root of 79889529 is about 8938.0942599639. The cubic root of 79889529 is about 430.6885111811.

The spelling of 79889529 in words is "seventy-nine million, eight hundred eighty-nine thousand, five hundred twenty-nine".