122290989 has 8 divisors (see below), whose sum is σ = 164299872. Its totient is φ = 80904720.

The previous prime is 122290963. The next prime is 122291009. The reversal of 122290989 is 989092221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122290989 - 2¹¹ = 122288941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122290989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122290489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155194 + ... + 155979.

It is an arithmetic number, because the mean of its divisors is an integer number (20537484).

Almost surely, 2^122290989 is an apocalyptic number.

It is an amenable number.

122290989 is a deficient number, since it is larger than the sum of its proper divisors (42008883).

122290989 is a wasteful number, since it uses less digits than its factorization.

122290989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311307.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 122290989 is about 11058.5256250551. The cubic root of 122290989 is about 496.3615732564.

The spelling of 122290989 in words is "one hundred twenty-two million, two hundred ninety thousand, nine hundred eighty-nine".