79913545 has 8 divisors (see below), whose sum is σ = 96974280. Its totient is φ = 63212160.

The previous prime is 79913543. The next prime is 79913557. The reversal of 79913545 is 54531997.

It can be written as a sum of positive squares in 4 ways, for example, as 3316041 + 76597504 = 1821^2 + 8752^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79913545 - 2¹ = 79913543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79913543) 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 7 ways as a sum of consecutive naturals, for example, 89346 + ... + 90235.

It is an arithmetic number, because the mean of its divisors is an integer number (12121785).

Almost surely, 2^79913545 is an apocalyptic number.

It is an amenable number.

79913545 is a deficient number, since it is larger than the sum of its proper divisors (17060735).

79913545 is a wasteful number, since it uses less digits than its factorization.

79913545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179675.

The product of its digits is 170100, while the sum is 43.

The square root of 79913545 is about 8939.4376221326. The cubic root of 79913545 is about 430.7316640161.

The spelling of 79913545 in words is "seventy-nine million, nine hundred thirteen thousand, five hundred forty-five".