79805045 has 4 divisors (see below), whose sum is σ = 95766060. Its totient is φ = 63844032.

The previous prime is 79805029. The next prime is 79805051. The reversal of 79805045 is 54050897.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47803396 + 32001649 = 6914^2 + 5657^2 .

It is a cyclic number.

It is not a de Polignac number, because 79805045 - 2⁴ = 79805029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7980500 + ... + 7980509.

It is an arithmetic number, because the mean of its divisors is an integer number (23941515).

Almost surely, 2^79805045 is an apocalyptic number.

It is an amenable number.

79805045 is a deficient number, since it is larger than the sum of its proper divisors (15961015).

79805045 is a wasteful number, since it uses less digits than its factorization.

79805045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15961014.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 79805045 is about 8933.3669464542. The cubic root of 79805045 is about 430.5366384536.

The spelling of 79805045 in words is "seventy-nine million, eight hundred five thousand, forty-five".