79409645 has 32 divisors (see below), whose sum is σ = 117024000. Its totient is φ = 51565248.

The previous prime is 79409621. The next prime is 79409647. The reversal of 79409645 is 54690497.

It is not a de Polignac number, because 79409645 - 2⁸ = 79409389 is a prime.

It is a super-3 number, since 3×79409645³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79409596 and 79409605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79409647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31367 + ... + 33803.

It is an arithmetic number, because the mean of its divisors is an integer number (3657000).

Almost surely, 2^79409645 is an apocalyptic number.

It is an amenable number.

79409645 is a deficient number, since it is larger than the sum of its proper divisors (37614355).

79409645 is a wasteful number, since it uses less digits than its factorization.

79409645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 79409645 is about 8911.2089527740. The cubic root of 79409645 is about 429.8244190309.

The spelling of 79409645 in words is "seventy-nine million, four hundred nine thousand, six hundred forty-five".