79447245 has 16 divisors (see below), whose sum is σ = 127325952. Its totient is φ = 42301760.

The previous prime is 79447241. The next prime is 79447253. The reversal of 79447245 is 54274497.

It is not a de Polignac number, because 79447245 - 2² = 79447241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79447197 and 79447206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79447241) 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 15 ways as a sum of consecutive naturals, for example, 5740 + ... + 13850.

It is an arithmetic number, because the mean of its divisors is an integer number (7957872).

Almost surely, 2^79447245 is an apocalyptic number.

It is an amenable number.

79447245 is a deficient number, since it is larger than the sum of its proper divisors (47878707).

79447245 is a wasteful number, since it uses less digits than its factorization.

79447245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772.

The product of its digits is 282240, while the sum is 42.

The square root of 79447245 is about 8913.3184056220. The cubic root of 79447245 is about 429.8922481048.

The spelling of 79447245 in words is "seventy-nine million, four hundred forty-seven thousand, two hundred forty-five".