122838949 has 4 divisors (see below), whose sum is σ = 122957100. Its totient is φ = 122720800.

The previous prime is 122838943. The next prime is 122838973. The reversal of 122838949 is 949838221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949838221 = 28607 ⋅33203.

It can be written as a sum of positive squares in 2 ways, for example, as 59954049 + 62884900 = 7743^2 + 7930^2 .

It is a cyclic number.

It is not a de Polignac number, because 122838949 - 2³ = 122838941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122838899 and 122838908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122838941) 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, 57502 + ... + 59599.

It is an arithmetic number, because the mean of its divisors is an integer number (30739275).

Almost surely, 2^122838949 is an apocalyptic number.

It is an amenable number.

122838949 is a deficient number, since it is larger than the sum of its proper divisors (118151).

122838949 is a wasteful number, since it uses less digits than its factorization.

122838949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118150.

The product of its digits is 248832, while the sum is 46.

The square root of 122838949 is about 11083.2733883091. The cubic root of 122838949 is about 497.1018323725.

The spelling of 122838949 in words is "one hundred twenty-two million, eight hundred thirty-eight thousand, nine hundred forty-nine".