122649844 has 12 divisors (see below), whose sum is σ = 218687364. Its totient is φ = 60167744.

The previous prime is 122649841. The next prime is 122649859. The reversal of 122649844 is 448946221.

It can be written as a sum of positive squares in 2 ways, for example, as 61027344 + 61622500 = 7812^2 + 7850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122649797 and 122649806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122649841) 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, 289057 + ... + 289480.

It is an arithmetic number, because the mean of its divisors is an integer number (18223947).

Almost surely, 2^122649844 is an apocalyptic number.

It is an amenable number.

122649844 is a deficient number, since it is larger than the sum of its proper divisors (96037520).

122649844 is a wasteful number, since it uses less digits than its factorization.

122649844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578594 (or 578592 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 122649844 is about 11074.7390036967. The cubic root of 122649844 is about 496.8466127738.

The spelling of 122649844 in words is "one hundred twenty-two million, six hundred forty-nine thousand, eight hundred forty-four".