77800089 has 8 divisors (see below), whose sum is σ = 103921920. Its totient is φ = 51772496.

The previous prime is 77800081. The next prime is 77800097. The reversal of 77800089 is 98000877.

It is an interprime number because it is at equal distance from previous prime (77800081) and next prime (77800097).

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 77800089 - 2³ = 77800081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77800081) 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, 21609 + ... + 24950.

It is an arithmetic number, because the mean of its divisors is an integer number (12990240).

Almost surely, 2^77800089 is an apocalyptic number.

It is an amenable number.

77800089 is a deficient number, since it is larger than the sum of its proper divisors (26121831).

77800089 is a wasteful number, since it uses less digits than its factorization.

77800089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47119.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 77800089 is about 8820.4358735836. The cubic root of 77800089 is about 426.9005338836.

The spelling of 77800089 in words is "seventy-seven million, eight hundred thousand, eighty-nine".