77996009 has 8 divisors (see below), whose sum is σ = 95995200. Its totient is φ = 61711056.

The previous prime is 77995997. The next prime is 77996041. The reversal of 77996009 is 90069977.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77996009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77996089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428459 + ... + 428640.

It is an arithmetic number, because the mean of its divisors is an integer number (11999400).

Almost surely, 2^77996009 is an apocalyptic number.

It is an amenable number.

77996009 is a deficient number, since it is larger than the sum of its proper divisors (17999191).

77996009 is a wasteful number, since it uses less digits than its factorization.

77996009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857119.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 77996009 is about 8831.5349175554. The cubic root of 77996009 is about 427.2585807887.

The spelling of 77996009 in words is "seventy-seven million, nine hundred ninety-six thousand, nine".