79648969 has 4 divisors (see below), whose sum is σ = 83841040. Its totient is φ = 75456900.

The previous prime is 79648963. The next prime is 79648991. The reversal of 79648969 is 96984697.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96984697 = 103 ⋅941599.

It is a cyclic number.

It is not a de Polignac number, because 79648969 - 2¹³ = 79640777 is a prime.

It is a super-2 number, since 2×79648969² = 12687916525525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79648963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096007 + ... + 2096044.

It is an arithmetic number, because the mean of its divisors is an integer number (20960260).

Almost surely, 2^79648969 is an apocalyptic number.

It is an amenable number.

79648969 is a deficient number, since it is larger than the sum of its proper divisors (4192071).

79648969 is a wasteful number, since it uses less digits than its factorization.

79648969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4192070.

The product of its digits is 5878656, while the sum is 58.

The square root of 79648969 is about 8924.6271070561. The cubic root of 79648969 is about 430.2557861601.

The spelling of 79648969 in words is "seventy-nine million, six hundred forty-eight thousand, nine hundred sixty-nine".