79069540 has 24 divisors (see below), whose sum is σ = 181141632. Its totient is φ = 28752480.

The previous prime is 79069537. The next prime is 79069541. The reversal of 79069540 is 4596097.

It is a junction number, because it is equal to n+sod(n) for n = 79069493 and 79069502.

It is not an unprimeable number, because it can be changed into a prime (79069541) 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, 179484 + ... + 179923.

It is an arithmetic number, because the mean of its divisors is an integer number (7547568).

Almost surely, 2^79069540 is an apocalyptic number.

It is an amenable number.

79069540 is an abundant number, since it is smaller than the sum of its proper divisors (102072092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79069540 is a wasteful number, since it uses less digits than its factorization.

79069540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359427 (or 359425 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 79069540 is about 8892.1054874535. The cubic root of 79069540 is about 429.2099066413.

The spelling of 79069540 in words is "seventy-nine million, sixty-nine thousand, five hundred forty".