122839299 has 24 divisors (see below), whose sum is σ = 196747824. Its totient is φ = 73224000.

The previous prime is 122839279. The next prime is 122839303. The reversal of 122839299 is 992938221.

It is a happy number.

It is not a de Polignac number, because 122839299 - 2²¹ = 120742147 is a prime.

It is a super-2 number, since 2×122839299² = 30178986757622802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122839259) 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 23 ways as a sum of consecutive naturals, for example, 4132 + ... + 16209.

It is an arithmetic number, because the mean of its divisors is an integer number (8197826).

Almost surely, 2^122839299 is an apocalyptic number.

122839299 is a deficient number, since it is larger than the sum of its proper divisors (73908525).

122839299 is a wasteful number, since it uses less digits than its factorization.

122839299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20419 (or 20416 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 122839299 is about 11083.2891778569. The cubic root of 122839299 is about 497.1023044961.

The spelling of 122839299 in words is "one hundred twenty-two million, eight hundred thirty-nine thousand, two hundred ninety-nine".