77152009 has 8 divisors (see below), whose sum is σ = 84234528. Its totient is φ = 70080960.

The previous prime is 77152003. The next prime is 77152063. The reversal of 77152009 is 90025177.

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 77152009 - 2⁹ = 77151497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77152003) 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, 17574 + ... + 21520.

It is an arithmetic number, because the mean of its divisors is an integer number (10529316).

Almost surely, 2^77152009 is an apocalyptic number.

It is an amenable number.

77152009 is a deficient number, since it is larger than the sum of its proper divisors (7082519).

77152009 is a wasteful number, since it uses less digits than its factorization.

77152009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5735.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 77152009 is about 8783.6216334722. The cubic root of 77152009 is about 425.7118570614.

The spelling of 77152009 in words is "seventy-seven million, one hundred fifty-two thousand, nine".