122649797 has 4 divisors (see below), whose sum is σ = 123473100. Its totient is φ = 121826496.

The previous prime is 122649773. The next prime is 122649809. The reversal of 122649797 is 797946221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70795396 + 51854401 = 8414^2 + 7201^2 .

It is a cyclic number.

It is not a de Polignac number, because 122649797 - 2²⁴ = 105872581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122649707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411428 + ... + 411725.

It is an arithmetic number, because the mean of its divisors is an integer number (30868275).

Almost surely, 2^122649797 is an apocalyptic number.

It is an amenable number.

122649797 is a deficient number, since it is larger than the sum of its proper divisors (823303).

122649797 is an equidigital number, since it uses as much as digits as its factorization.

122649797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823302.

The product of its digits is 381024, while the sum is 47.

The square root of 122649797 is about 11074.7368817503. The cubic root of 122649797 is about 496.8465493091.

The spelling of 122649797 in words is "one hundred twenty-two million, six hundred forty-nine thousand, seven hundred ninety-seven".