122647869 has 24 divisors (see below), whose sum is σ = 187324800. Its totient is φ = 77112000.

The previous prime is 122647813. The next prime is 122647871. The reversal of 122647869 is 968746221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-122647869 is a prime.

It is a super-2 number, since 2×122647869² = 30084999540482322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122647969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39369 + ... + 42369.

It is an arithmetic number, because the mean of its divisors is an integer number (7805200).

Almost surely, 2^122647869 is an apocalyptic number.

122647869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

122647869 is a deficient number, since it is larger than the sum of its proper divisors (64676931).

122647869 is a wasteful number, since it uses less digits than its factorization.

122647869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3262 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 122647869 is about 11074.6498364508. The cubic root of 122647869 is about 496.8439458935.

The spelling of 122647869 in words is "one hundred twenty-two million, six hundred forty-seven thousand, eight hundred sixty-nine".