122649829 has 2 divisors, whose sum is σ = 122649830. Its totient is φ = 122649828.

The previous prime is 122649811. The next prime is 122649841. The reversal of 122649829 is 928946221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70593604 + 52056225 = 8402^2 + 7215^2 .

It is a cyclic number.

It is not a de Polignac number, because 122649829 - 2⁷ = 122649701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122649809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61324914 + 61324915.

It is an arithmetic number, because the mean of its divisors is an integer number (61324915).

Almost surely, 2^122649829 is an apocalyptic number.

It is an amenable number.

122649829 is a deficient number, since it is larger than the sum of its proper divisors (1).

122649829 is an equidigital number, since it uses as much as digits as its factorization.

122649829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 122649829 is about 11074.7383264798. The cubic root of 122649829 is about 496.8465925191.

The spelling of 122649829 in words is "one hundred twenty-two million, six hundred forty-nine thousand, eight hundred twenty-nine".