122677789 has 8 divisors (see below), whose sum is σ = 132201720. Its totient is φ = 113166336.

The previous prime is 122677787. The next prime is 122677799. The reversal of 122677789 is 987776221.

It can be written as a sum of positive squares in 4 ways, for example, as 3496900 + 119180889 = 1870^2 + 10917^2 .

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 122677789 - 2¹ = 122677787 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122677783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32109 + ... + 35725.

It is an arithmetic number, because the mean of its divisors is an integer number (16525215).

Almost surely, 2^122677789 is an apocalyptic number.

It is an amenable number.

122677789 is a deficient number, since it is larger than the sum of its proper divisors (9523931).

122677789 is a wasteful number, since it uses less digits than its factorization.

122677789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239.

The product of its digits is 592704, while the sum is 49.

The square root of 122677789 is about 11076.0005868544. Note that the first 3 decimals coincide. The cubic root of 122677789 is about 496.8843443729.

The spelling of 122677789 in words is "one hundred twenty-two million, six hundred seventy-seven thousand, seven hundred eighty-nine".