79438529 has 4 divisors (see below), whose sum is σ = 80444160. Its totient is φ = 78432900.

The previous prime is 79438517. The next prime is 79438537. The reversal of 79438529 is 92583497.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79438529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79438549) 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, 502697 + ... + 502854.

It is an arithmetic number, because the mean of its divisors is an integer number (20111040).

Almost surely, 2^79438529 is an apocalyptic number.

79438529 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

79438529 is a deficient number, since it is larger than the sum of its proper divisors (1005631).

79438529 is a wasteful number, since it uses less digits than its factorization.

79438529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005630.

The product of its digits is 544320, while the sum is 47.

The square root of 79438529 is about 8912.8294609512. The cubic root of 79438529 is about 429.8765266540.

The spelling of 79438529 in words is "seventy-nine million, four hundred thirty-eight thousand, five hundred twenty-nine".