79965547 has 8 divisors (see below), whose sum is σ = 86450000. Its totient is φ = 73708704.

The previous prime is 79965511. The next prime is 79965559. The reversal of 79965547 is 74556997.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79965547 - 2¹⁹ = 79441259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79965494 and 79965503.

It is not an unprimeable number, because it can be changed into a prime (79965247) 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 7 ways as a sum of consecutive naturals, for example, 56172 + ... + 57577.

It is an arithmetic number, because the mean of its divisors is an integer number (10806250).

Almost surely, 2^79965547 is an apocalyptic number.

79965547 is a deficient number, since it is larger than the sum of its proper divisors (6484453).

79965547 is a wasteful number, since it uses less digits than its factorization.

79965547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113805.

The product of its digits is 2381400, while the sum is 52.

The square root of 79965547 is about 8942.3457213418. The cubic root of 79965547 is about 430.8250735093.

The spelling of 79965547 in words is "seventy-nine million, nine hundred sixty-five thousand, five hundred forty-seven".