122699808 has 216 divisors, whose sum is σ = 439193664. Its totient is φ = 31806720.

The previous prime is 122699791. The next prime is 122699809. The reversal of 122699808 is 808996221.

It is not an unprimeable number, because it can be changed into a prime (122699809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 243685 + ... + 244187.

It is an arithmetic number, because the mean of its divisors is an integer number (2033304).

Almost surely, 2^122699808 is an apocalyptic number.

122699808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122699808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219596832).

122699808 is an abundant number, since it is smaller than the sum of its proper divisors (316493856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122699808 is a wasteful number, since it uses less digits than its factorization.

122699808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 122699808 is about 11076.9945382310. The cubic root of 122699808 is about 496.9140705957.

The spelling of 122699808 in words is "one hundred twenty-two million, six hundred ninety-nine thousand, eight hundred eight".