77000989 has 8 divisors (see below), whose sum is σ = 83578880. Its totient is φ = 70516656.

The previous prime is 77000953. The next prime is 77000999. The reversal of 77000989 is 98900077.

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-77000989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77000999) 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, 21669 + ... + 24970.

It is an arithmetic number, because the mean of its divisors is an integer number (10447360).

Almost surely, 2^77000989 is an apocalyptic number.

It is an amenable number.

77000989 is a deficient number, since it is larger than the sum of its proper divisors (6577891).

77000989 is a wasteful number, since it uses less digits than its factorization.

77000989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46779.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 77000989 is about 8775.0207407162. The cubic root of 77000989 is about 425.4339079424.

The spelling of 77000989 in words is "seventy-seven million, nine hundred eighty-nine", and thus it is an aban number.