79173506 has 4 divisors (see below), whose sum is σ = 118760262. Its totient is φ = 39586752.

The previous prime is 79173503. The next prime is 79173541. The reversal of 79173506 is 60537197.

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

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 1575025 = 8809^2 + 1255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 79173506.

It is not an unprimeable number, because it can be changed into a prime (79173503) 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 as a sum of consecutive naturals, namely, 19793375 + ... + 19793378.

Almost surely, 2^79173506 is an apocalyptic number.

79173506 is a deficient number, since it is larger than the sum of its proper divisors (39586756).

79173506 is a wasteful number, since it uses less digits than its factorization.

79173506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39586755.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 79173506 is about 8897.9495390792. The cubic root of 79173506 is about 429.3979423608.

The spelling of 79173506 in words is "seventy-nine million, one hundred seventy-three thousand, five hundred six".