122798839 has 4 divisors (see below), whose sum is σ = 122893120. Its totient is φ = 122704560.

The previous prime is 122798807. The next prime is 122798861. The reversal of 122798839 is 938897221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938897221 = 103 ⋅9115507.

It is a cyclic number.

It is not a de Polignac number, because 122798839 - 2⁵ = 122798807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122798792 and 122798801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122798869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45159 + ... + 47800.

It is an arithmetic number, because the mean of its divisors is an integer number (30723280).

Almost surely, 2^122798839 is an apocalyptic number.

122798839 is a deficient number, since it is larger than the sum of its proper divisors (94281).

122798839 is an equidigital number, since it uses as much as digits as its factorization.

122798839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94280.

The product of its digits is 435456, while the sum is 49.

The square root of 122798839 is about 11081.4637571036. The cubic root of 122798839 is about 497.0477210742.

The spelling of 122798839 in words is "one hundred twenty-two million, seven hundred ninety-eight thousand, eight hundred thirty-nine".