122826389 has 6 divisors (see below), whose sum is σ = 142879734. Its totient is φ = 105279720.

The previous prime is 122826349. The next prime is 122826409. The reversal of 122826389 is 983628221.

It can be written as a sum of positive squares in only one way, i.e., 83576164 + 39250225 = 9142^2 + 6265^2 .

It is not a de Polignac number, because 122826389 - 2⁸ = 122826133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122826349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253282 + ... + 1253379.

It is an arithmetic number, because the mean of its divisors is an integer number (23813289).

Almost surely, 2^122826389 is an apocalyptic number.

It is an amenable number.

122826389 is a deficient number, since it is larger than the sum of its proper divisors (20053345).

122826389 is an equidigital number, since it uses as much as digits as its factorization.

122826389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506675 (or 2506668 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 122826389 is about 11082.7067542185. The cubic root of 122826389 is about 497.0848892887.

The spelling of 122826389 in words is "one hundred twenty-two million, eight hundred twenty-six thousand, three hundred eighty-nine".