79448157 has 12 divisors (see below), whose sum is σ = 121509180. Its totient is φ = 49849728.

The previous prime is 79448147. The next prime is 79448203. The reversal of 79448157 is 75184497.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44235801 + 35212356 = 6651^2 + 5934^2 .

It is not a de Polignac number, because 79448157 - 2¹⁸ = 79186013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79448137) 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 11 ways as a sum of consecutive naturals, for example, 259482 + ... + 259787.

It is an arithmetic number, because the mean of its divisors is an integer number (10125765).

Almost surely, 2^79448157 is an apocalyptic number.

It is an amenable number.

79448157 is a deficient number, since it is larger than the sum of its proper divisors (42061023).

79448157 is a wasteful number, since it uses less digits than its factorization.

79448157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519292 (or 519289 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 79448157 is about 8913.3695648728. The cubic root of 79448157 is about 429.8938930548.

The spelling of 79448157 in words is "seventy-nine million, four hundred forty-eight thousand, one hundred fifty-seven".